KR20160002065U - Board-mounted parallel circuit structure with efficient power utilization - Google Patents

Abstract

A board-mounted parallel circuit structure having high power usage efficiency includes a first substrate, a first constant voltage layer, and a second constant voltage layer. The first constant voltage layer and the second constant voltage layer are each connected to a power source via two power connection points. The first constant-voltage layer has at least one insulating region. Each of the insulating regions has a light emitting unit formed in an insulating region. One electrode of the light emitting unit is connected to the first constant voltage layer and the other electrode of the light emitting unit is connected to the second constant voltage layer through the lead wire. When the power source outputs a low voltage to the first constant voltage layer, the resistance values in the first constant voltage layer are the same everywhere. Thus, any given distance between the light emitting unit and the corresponding power connection point, the illumination efficiency of the light emitting unit is not affected, and high power usage efficiency is ensured.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a board-mounted parallel circuit structure having high power usage efficiency,

The present invention relates to a parallel circuit structure, and more particularly to a board-mounted parallel circuit structure having high power usage efficiency.

In lighting applications, ordinary circuit structures usually exist as a single substrate circuit structure. The circuit structure is generally fabricated on a single substrate. From the viewpoint of the positive electrode power supply terminal and the negative electrode power supply terminal of a single substrate formed all in the same plane, the voltage varies from position to position on the electric wire based on the distance from the measurement point to the anode terminal or the cathode terminal. The farther the measuring point is from the power source, the larger the resistance value measured at that point. While the resistance value to the measuring point in the circuit structure increases, the resulting voltage drop to the measuring point also increases, thereby lowering the brightness of the lighting module such as a light-emitting diode (LED) and deteriorating the power use efficiency .

Conventional types of driving circuits for illumination include parallel circuits, serial circuits, and complex circuits. Referring to FIG. 3, a conventional parallel circuit for an illumination driving circuit has a plurality of light emitting modules connected in series between an anode and a cathode of a power source and connected to each other in parallel. Each of the light emitting modules is composed of a circuit loop including a light emitting diode (LED) 91 and a resistor R. Referring to Fig. 4, a plurality of series circuits and a composite circuit are shown. The series circuit includes a plurality of LEDs 91 connected in series. The composite circuit is formed by connecting a plurality of series circuits in parallel to one another, and is connected between the positive and negative electrodes of the power source.

Conventional AC-driven LED circuits include full-wave rectifiers, compensation modules, LED modules and lighting efficiency enhancing modules. The full wave rectifier has at least four LED units arranged in a full bridge form to provide two output terminals. The compensation module has four compensation capacitors connected in parallel between two terminals of each of the LED units. The LED module is connected to two output terminals of a full wave rectifier and includes an LED string having a plurality of LEDs connected in series. The lighting efficiency enhancing module includes at least one capacitor connected in parallel between two terminals of the LED module.

As can be seen from the above description, the wiring length in a single substrate affects the illumination brightness and power usage efficiency, and each of the light emitting modules of the parallel circuit is connected in parallel with the resistor R It needs to be connected. However, a disadvantage of parallel circuits is the high cost and overheating problem due to the high operating voltage. Serial and composite circuits also require all LEDs to boost their voltage to have the same brightness, which consumes more power. In particular, if one of the LEDs 91 fails and an open circuit occurs, all the other LEDs 91 of the same LED string will not operate. Although the use of compensation modules and lighting efficiency enhancing modules can increase brightness, use power efficiently, and reduce the risk of LED damage, more costs are incurred from additional compensation modules and lighting efficiency enhancing modules, The cost efficiency can not be guaranteed to the manufacturers of the related industries.

The purpose of the present invention is to provide a board-mounted parallel circuit structure with high power utilization efficiency, which requires less electronic components, has a stable illumination efficiency to lower the production cost and increase power usage efficiency, To form a circuit in the device.

In order to achieve the above object, a board-mounted parallel circuit structure having high power usage efficiency has a first substrate, a second constant voltage layer, and at least one light-emitting unit.

The first substrate has a first constant voltage layer. The first constant voltage layer has a first power connection point and at least one insulation region.

The first power connection point is formed at one corner of the first constant voltage layer.

At least one of the insulating regions is formed in the first constant-voltage layer.

And the second constant voltage layer has a second power connection point formed at one corner portion of the second constant voltage layer.

Each of the at least one light emitting unit is formed in a corresponding insulating region and has a cathode terminal and a cathode terminal. One of the positive terminal and the negative terminal of the light emitting unit is electrically connected to the first constant voltage layer and the other of the positive terminal and the negative terminal of the light emitting unit is electrically connected to the second constant voltage layer.

In the above-described circuit structure, the first substrate has a first constant voltage layer, the first constant voltage layer has the first power connection point formed at one corner portion of the first constant voltage layer, The first constant voltage layer and the second constant voltage layer having the second power connection point formed at one corner of the second constant voltage layer are connected to the power source through the first power connection point and the second power connection point. Wherein the first constant voltage layer has at least one insulating region formed in the first constant voltage layer, each of the insulating regions has a light emitting unit formed in the insulating region, and one of the cathode terminal and the cathode terminal of the light emitting unit is the And one of the positive electrode terminal and the negative electrode terminal is electrically connected to the second constant voltage layer. When a power source outputs a low voltage to the first constant voltage layer of the first substrate, the resistance values in the first constant voltage layer are the same everywhere. Therefore, regardless of how far the distance between the light emitting unit and the first power connection point is, the power supply stably maintains the lighting efficiency of at least one light emitting unit and the method of driving at least one of the light emitting units Will be unaffected and thus ensure efficient power usage.

Other objects, advantages and novel features of the present invention will become more apparent from the following detailed description together with the accompanying drawings.

According to the embodiments of the present invention, the power supplied from the power source 40 and the power supplied from the light emitting unit 30 (30), regardless of whether the distance between the at least one light emitting unit 30 and the first power connection point 111 is long or short, ) Remains the same, and thereby achieving the goal of high power usage efficiency.

1 is a circuit diagram showing a first embodiment of a board-mounted parallel circuit structure having high power usage efficiency according to the present invention.
2 is a circuit diagram showing a second embodiment of a board-mounted parallel circuit structure having high power usage efficiency according to the present invention.
3 is a circuit diagram of a conventional illumination driving circuit.
4 is a circuit diagram of another conventional illumination driving circuit.

1, a first embodiment of a board-mounted parallel circuit structure having high power usage efficiency according to the present invention includes a first substrate 10, a second substrate 20, at least one light-emitting unit 30, And a power source 40. The power source 40 has a positive output terminal and a negative output terminal.

The first substrate 10 has a first surface, a first constant voltage layer 11 and a first power connection point 111. A first constant voltage layer (11) is formed on the first surface of the first substrate (10). The first power supply connection point 111 is formed at one point in the first constant voltage layer 11 and adjacent to one corner portion of the first constant voltage layer 11. The second substrate 20 has a second surface, a second constant voltage layer 21 and a second power connection point 211. The second constant voltage layer 21 is formed on the second surface of the second substrate 20. The second power supply connection point 211 is formed at one point in the second constant voltage layer 21 and is adjacent to one corner portion of the second constant voltage layer 21. The first constant voltage layer 11 is connected to the positive output terminal and the negative output terminal of the power source 40 through the first power source connection point 111 and the second power source connection point 211. The second constant voltage layer 21 is connected to the negative output terminal of the power source 40 through the second power connection point 211. In this embodiment, each of the first constant voltage layer 11 and the second constant voltage layer 21 is formed by a metal coating layer.

It is noted that the first constant voltage layer 11 and the second constant voltage layer 21 may be formed on two opposing surfaces of a single substrate. The first constant voltage layer 11 and the second constant voltage layer 21 may be formed on the first surface 10 and the second surface 20 in the present embodiment, The implementation of the two constant voltage layers 21 is not limited to being formed on two substrates.

The first constant voltage layer (11) of the first substrate (10) includes at least one insulating region (12). Each of the at least one insulation regions (12) has at least one light emitting unit (30). Each of the at least one light emitting unit (30) has a cathode terminal and a cathode terminal facing each other. The positive terminal and the negative terminal of the light emitting diode 30 are electrically connected to the first constant voltage layer 11 and the second constant voltage layer 21, respectively.

The first power supply connection point 111 of the first constant voltage layer 11 is connected to the positive output terminal of the power supply 40. The second power supply connection point 211 of the second constant voltage layer 21 is connected to the negative output terminal of the power supply 40. The positive terminal and the negative terminal of each of the at least one light emitting unit 30 are electrically connected to the first constant voltage layer 11 and the second constant voltage layer 12 respectively and the positive and negative electrodes of the circuit loop are electrically connected to the first substrate 10 ) And the second substrate 20, and the resistance values in the first constant voltage layer 11 are almost the same everywhere. Therefore, regardless of whether the distance between the at least one light emitting unit 30 and the first power supply connection point 111 is long or short, the power supplied from the power supply 40 and the illumination efficiency of the light emitting unit 30 are the same And thereby achieving the goal of high power usage efficiency.

In this embodiment, the first constant-voltage layer 11 of the first substrate 10 includes a plurality of insulating regions 12. Each of the insulating regions 12 has a light emitting unit 30. The negative terminal of each of the light emitting units 30 is electrically connected to the second constant voltage layer 21 through a lead. The first substrate 10 and the second substrate 20 are in the form of a rectangle and a sheet and each of the first substrate 10 and the second substrate 20 has two parallel first long sides and two And has first parallel short sides. A plurality of insulating regions 12 are arranged in a column in a direction in which the first long side extends in the first constant voltage layer 11 and are spaced apart from each other at an interval. Each of the light emitting units 30 is formed in a corresponding insulating region 12, is rectangular, has two parallel second long sides and two parallel short second sides. The positive terminal of the light emitting unit 30 is formed in one of the two second short sides of the corresponding insulating region 12 and is electrically connected to the first constant voltage layer 11 of the first substrate 10. The negative terminal of the light emitting unit 30 is formed at one point of the corresponding insulating region 12 adjacent to the other second short side and is connected to the second constant voltage layer 21 of the second substrate 20 through the corresponding lead And is electrically connected. The insulating region 12 may further have a conductive layer 121 formed in the insulating region 12. The conductive layer 121 is located between the negative terminal of the light emitting unit 30 and the other second short side of the insulating region 12 and can be electrically connected between the negative terminal of the light emitting unit 30 and the corresponding lead. The conductive layer 121 is circular and increases the conductivity of the light emitting unit 30 and the second constant voltage layer 21 through corresponding conductive lines. The conductive layer 121 may be a metal coating layer. Each of the light emitting units 30 may be an LED unit and the LED unit may be a single-core LED, a dual-core LED or a multi-core LED ).

Referring to FIG. 2, the second embodiment of the board-mounted parallel circuit structure having high power utilization efficiency according to the present invention has a size of the first substrate 10 and the second substrate 20, a position of the insulating region 12 , The number and arrangement of the light emitting units 30, and the number of the light emitting units 30. The area of the first substrate 10 and the second substrate 20 in this embodiment is larger than in the above embodiment and more insulation regions 12 are formed in the first substrate 10 and more Both the first long sides and the first short sides and both the second long sides and the second short sides have been extended so that the light emitting units 30 can be formed in the insulating regions 12. [ The entirety of the insulating regions 12 are arranged in rows on the first substrate along the first short sides and spaced apart from each other at an interval. The entire insulating regions 12 are formed on the first substrate 10 in the form of an MxN array together with the light emitting units 30 formed in one of the insulating regions 12, As an element of the array.

In other words, the first substrate 10 and the second substrate 20 have a first constant voltage layer 11 and a second constant voltage layer 21 formed on the first substrate 10 and the second substrate 20, The first constant voltage layer 11 has a first power supply connection point 111 at one corner of the first constant voltage layer 11 and the second constant voltage layer 21 is connected to one corner portion of the second constant voltage layer 21, And the first power connection point 111 and the second power connection point 211 are connected to the power source 40. [ The first constant voltage layer 12 has at least one insulation region 12 formed in the first constant voltage layer 12 or an M x N array of insulation regions 12 and each of the light emitting units 30 has a corresponding insulation Is formed in the region (12). The positive terminal and the negative terminal of the light emitting unit 30 are electrically connected to the first constant voltage layer 11 and the second constant voltage layer 21, respectively. When the power source 40 outputs a low voltage such as 2.5 to 3.5 Vf (Voltage-foward) for a single-core LED to drive at least one light-emitting unit 30, The resistance values of the at least one light emitting unit 30 of the first substrate 10 are almost the same everywhere and regardless of how far the at least one light emitting unit 30 is separated from the first voltage connecting point 111 The difference in the voltage drop between the electrodes does not occur. Thus, at least one light emitting unit 30 consumes substantially the same power in voltage Vf, current (If) and wattage to produce the same illumination efficiency without additional modules or electronic components. So that the goal of high power usage efficiency can be achieved without fail.

While many features and advantages of the present invention have been set forth in the foregoing description, together with the specific structure and function of the present design, the present disclosure is illustrative only. Specific changes may be made and particularly to the broad and general meaning of the terms as expressed in the appended claims within the scope of this invention in regard to the shape, size and arrangement of the parts.

10: first substrate
11: a first constant voltage layer
12: Insulation area
20: second substrate
21: second constant voltage layer
30: Light emitting unit
40: Power supply
91: LED
111: first power connection point
121: conductive layer
211: Second power connection point

Claims (15)

A board-mounted parallel circuit structure having high power usage efficiency,
A first substrate having a first constant voltage layer, wherein the first constant voltage layer has a first power connection point formed at one corner of the first constant voltage layer, and at least one insulation area formed in the first constant voltage layer A first substrate;
A second constant voltage layer having a second power supply connection point formed at one corner of the second constant voltage layer; And
At least one light emitting unit,
Wherein at least one of the light emitting units is formed in a corresponding insulating region and has a cathode terminal and a cathode terminal, one of the cathode terminal and the cathode terminal of the light emitting unit is electrically connected to the first constant voltage layer, And the other of the positive terminal and the negative terminal of the unit is electrically connected to the second constant voltage layer.
The method according to claim 1,
Wherein the negative terminal of each of the at least one light emitting unit is electrically connected to the second constant voltage layer via a lead.
The method of claim 2,
Each of said at least one of said insulating regions further having a conductive layer formed in said insulating region and electrically connected between said anode terminal of said light emitting unit and said lead.
The method of claim 3,
Further comprising a power source,
Wherein the power source has a positive output terminal and a negative output terminal, the first constant voltage layer is electrically connected to the positive output terminal of the power source via the first power source connection point, and the second constant voltage layer is connected to the second power source connection point To the negative output terminal of the power source.
The method of claim 4,
Wherein the first substrate is rectangular,
Two long sides;
Two short sides; And
Wherein the first constant voltage layer has a plurality of insulating regions formed in a direction in which the long sides extend, each of the insulating regions having a corresponding light emitting unit, and the light emitting unit is formed in the insulating region.
6. The method according to any one of claims 1 to 5,
An area of the first substrate is extended in a direction in which the long sides and the short sides of the first substrate extend so that a plurality of the insulating regions can be disposed along the long sides and the short sides of the first substrate, Wherein the isolation region has a corresponding light emitting unit and the light emitting unit is formed within the isolation region of the array of isolation regions.
The method of claim 6,
Wherein when the power source outputs a low voltage to drive a plurality of the light emitting units, a same voltage drop occurs in the plurality of light emitting units in the first substrate, and the resistance values in the first constant voltage layer are the same everywhere, Mounted parallel circuit structure.
The method of claim 7,
Wherein each of the conductive layers of each of the first constant voltage layer, the second constant voltage layer and the insulating region is formed by a metal coating layer.
The method of claim 8,
Wherein each of the light emitting units is an LED unit, and the LED unit is one of a single-core LED, a dual-core LED, and a multi-core LED.
6. The method according to any one of claims 1 to 5,
Further comprising a second substrate having two long sides and two short sides, the second constant voltage layer being formed on the second substrate.
The method of claim 6,
Further comprising a second substrate having two long sides and two short sides, the area of the second substrate extending in the extending direction of the long sides and the short sides of the second substrate, and the second constant voltage layer And a second circuit board formed on the second substrate.
The method of claim 7,
Further comprising a second substrate having two long sides and two short sides, the area of the second substrate extending in the extending direction of the long sides and the short sides of the second substrate, and the second constant voltage layer And a second circuit board formed on the second substrate.
The method of claim 8,
Further comprising a second substrate having two long sides and two short sides, the area of the second substrate extending in the extending direction of the long sides and the short sides of the second substrate, and the second constant voltage layer And a second circuit board formed on the second substrate.
The method of claim 9,
Further comprising a second substrate having two long sides and two short sides, the area of the second substrate extending in the extending direction of the long sides and the short sides of the second substrate, and the second constant voltage layer And a second circuit board formed on the second substrate.
The method of claim 10,
Further comprising a second substrate having two long sides and two short sides, the area of the second substrate extending in the extending direction of the long sides and the short sides of the second substrate, and the second constant voltage layer And a second circuit board formed on the second substrate.

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