KR101800823B1 - Non-polar LED lighting device - Google Patents

Abstract

The present invention relates to a non-polar LED lighting device for reducing power consumption. Provided is an LED lighting device which is used as an indoor/outdoor lighting unit. The non-polar LED lighting device stably distributes current flow by connecting LEDs, which are arranged in the LED lighting device, in a plurality of parallel structures with a non-polar circuit composition. The non-polar LED lighting device is provided to relatively decrease threshold voltage depending on distribution of the current flow, thereby reducing the power consumption to solve unnecessary energy waste. The non-polar LED lighting device comprises: a power supplying unit which applies commercial AC current; a switching mode power supply (SMPS) which converts AC current applied to the power supplying unit into DC current, and outputs the same as DC voltage which suitable for driving of an LED lighting lamp; and a light source unit which controls a lighting operation of the LED lighting lamp by using the DC voltage outputted from the SMPS. The light source unit includes a power saving type non-polar circuit. The power saving type non-polar circuit divides a smoothing circuit to which the DC current is applied into a plurality of compositions; and connects the divided compositions of the smoothing circuit in a parallel structure.

Description

[0001] The present invention relates to a non-polar LED lighting device,

The present invention relates to a non-polarized LED lamp, and more particularly, to an LED lighting apparatus used as indoor / outdoor lighting means of various facilities, by connecting the LED lighting apparatuses in a plurality of parallel configurations by non- The threshold voltage of the non-polarized LED lighting device can be lowered and the power consumption can be reduced.

Generally, an LED is an abbreviation of a light emitting diode (LED), which means a semiconductor device that converts electric energy into light energy using the characteristics of a compound semiconductor.

Since LEDs have small chip size and a directional light source, it is possible to slim down parts and modules, and it has a high flexibility of design. These advantages are important for designing automobile, architecture, interior area as well as road lighting facilities. The industry is replacing the conventional spherical light source at a very high speed.

In addition, the major advantage of the LED is that it is a low power device due to high efficiency. Thus, the features such as the reduction of electric energy and extension of service life are distinguished from the conventional general lighting.

In other words, a general example in which an LED is used as a lighting device is briefly described. That is, a plurality of LED modules having a plurality of LEDs mounted thereon are arranged in a specific arrangement, It is understood that the module is used by being installed on the ceiling or wall surface of the room, inside and outside.

In this case, the LED module includes the AC / DC converter in consideration of the characteristic that the LED is driven by the DC current of an appropriate voltage. Thus, the AC / And a transformer coil for coercion.

However, due to the considerable volume of the structural feature of the trans coil, when applied to an LED module, it poses a problem of making the product relatively large in size.

Meanwhile, in recent years, a power supply device called SMPS (Switching Mode Power Supply) has been widely used as a solution to the above problem.

When the AC power is supplied to the converter with the SMPS incorporated therein, the supplied AC power is converted into a DC power having a predetermined voltage and is output through the DC power output terminal , The direct current power output terminal is connected to a connector provided on the input side of the lighting device to supply direct current power to illuminate and illuminate the LED.

At this time, the LED lighting device as described above has to combine LEDs according to the polarity of the supplied direct current (DC) in the series of operation, and thus, conventionally, the non-polar circuit 4) to be implemented.

However, in order to lower the power consumption, the non-polar circuit type LED illumination device needs to selectively produce a product having a low threshold voltage (V _f ) of the LED. However, in reality, It is possible to exist.

Japanese Patent Application Laid-Open No. 10-2016-0029266

SUMMARY OF THE INVENTION Accordingly, the present invention has been made to solve the conventional problems of the conventional non-polar LED illumination device,

SUMMARY OF THE INVENTION It is an object of the present invention to provide an LED lighting device which is used as indoor / outdoor lighting means, in which LEDs arranged in the LED lighting device are connected in a plurality of parallel structures by a non-polar circuit structure, And the threshold voltage is relatively lowered in accordance with the current flow distribution action, thereby reducing unnecessary energy wastage, thereby reducing the power consumption of the non-polarity LED lighting device.

In order to accomplish the above object, according to the present invention, there is provided a non-polarized LED lighting apparatus having reduced power consumption, comprising:

An SMPS for converting an AC current applied to a power supply unit into a DC current and outputting it as a DC voltage suitable for driving an LED illumination lamp, And a light source unit for controlling the light emitting operation of the light emitting diode (LED) lamp,

The power saving type non-polarity circuit divides the smoothing circuit to which the direct current is applied into a plurality of configurations, and the plurality of divided smoothing circuits are connected in a parallel structure. .

As described above, the non-polarized LED lighting apparatus according to the present invention reduces power consumption by connecting LEDs arranged in an LED lighting device with a plurality of non-polar circuit structures having a parallel structure, Such a stable current distribution action lowers the threshold voltage and eliminates unnecessary energy waste factors. This provides a very useful anticipatory effect, such as remarkably improving the economical efficiency and the use efficiency.

FIG. 1 is a schematic configuration diagram of a non-polarized LED lighting device with reduced power consumption according to the present invention
Fig. 2 is an enlarged layout diagram of a power saving nonpolar circuit applied to a light source portion in the present invention
Fig. 3 is an enlarged view of a portion A of Fig. 2
FIG. 4 is a graph illustrating power consumption of a non-polarized LED lighting apparatus according to the present invention,

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of a non-polarized LED lighting apparatus according to the present invention will be described in detail with reference to the accompanying drawings.

Hereinafter, with reference to the accompanying drawings, a schematic configuration of the present invention will be described.

As shown in Fig. 1, this is constituted by a power supply unit 1, an SMPS 2, and an LED illumination device 100 including a light source unit 3. [

First, the power supply unit 1 is configured to receive an energy source necessary for the light emission operation of the LED illumination device from an external power supply for emitting operation of the LED illumination device, for example, It is preferable that it is formed in a general circuit configuration.

The Switching Mode Power Supply (SMPS) switches an AC current to a DC current and supplies a voltage corresponding to driving conditions of various electronic devices as well as an LED lighting lamp The basic configuration of the SMPS includes a DC-DC converter for converting the DC input voltage obtained from the AC input power source through the input rectifying smoothing circuit to a DC output voltage, a feedback circuit for stabilizing the output voltage, The feedback control circuit includes an error amplifier for amplifying an error of the output voltage, a comparator for generating a drive pulse by comparing the amplified error and the triangular wave, a DC-DC converter main body And a driving circuit for driving the switch. The DC-DC converter is composed of a main switch, a reflux diode, an LC filter which is a secondary low-pass filter, and the like.

At this time, the DC-DC converter is a main part responsible for the power conversion, and is classified into many types of converters according to the magnitude of the input / output change ratio and the circuit configuration.

Alternatively, the circuit method of the SMPS can be largely divided into a non-isolated type and an isolated type according to the presence or absence of a high-frequency transformer. Thus, the non-isolated type includes Buck type, Boost type, Buck-Boost type, C'uk type Bridge type, and a half-bridge type. In the present invention, the SMPS of the general function configuration used in the LED lighting device is applied as it is. .

The light source unit 3 includes an LED matrix module that receives a DC voltage converted and supplied through the SMPS and emits light according to the input DC voltage. In the case of applying the light source portion 3 of the matrix module configuration to the present invention, a power-saving non-polar circuit structure in which the applied direct current is distributed to reduce the total threshold voltage, for example, as shown in Figs. 2 and 3 , And a power-saving non-polar circuit of a characteristic structure in which a plurality of smoothing circuit portions 31 to which a direct current is applied are divided into a plurality of configurations and a plurality of the smoothing circuit portions 31 are connected in parallel .

Accordingly, the operation function of the non-polarized LED illumination device having the above-described series of constitutions and having reduced power consumption according to the present invention will be described;

First, when 220 V commercial AC power is applied through the power supply unit 1, the AC power applied is converted into DC power by the SMPS 2, and the DC voltage output from the SMPS is re- (LED) matrix module for light emission operation.

In this case, the light source unit 3, to which the DC voltage is applied from the SMPS, divides the applied direct current into a circuit configuration for lowering the threshold voltage of the entire LED matrix module, for example, a smoothing circuit unit 31 The power saving type non-polarity circuit structure in which the plurality of divided smoothing circuit portions 31 are connected in parallel is adopted as described above. Therefore, The power consumption of the LED lighting apparatus is reduced by distributing the current inputted by the non-polar circuit. The reduction of the power consumption in this manner is performed by a calculation method using the following equation (1) And the power consumption experiment graph shown in Fig.

[Equation 1]

(Load side voltage + Smooth circuit voltage) × 1A (Output current) = Power consumption

here,

Load voltage (V) = LED (LED) Threshold voltage (Vf) × Serial LED (LED) Quantity

Smooth circuit voltage (V) = Smooth circuit forward voltage (V) + Smooth circuit reverse voltage (Vf)

For example, assuming that the LED 10 is a series 1A circuit, the power consumption can be calculated by assuming the criteria of Clause 3;

First, in the case of a general LED (LED) illumination lamp

LED VF = 3V, 10 series = 3 × 10 Load side voltage: 30V

Smoothing circuit Forward voltage: 0.45V, Reverse voltage: 0.45V, Smoothing circuit voltage: 0.9V

Power consumption = (30V + 0.9V) x 1A = 30.9W;

In the case of an LED lighting lamp according to the present invention

LED VF = 3V, 10 series = 3 × 10 Load side voltage: 30V

Smoothing circuit Forward voltage: 0.3 V, Reverse voltage: 0.3 V, Smoothing circuit voltage: 0.6 V

Power consumption = (30V + 0.6V) x 1A = 30.6W;

Accordingly, it can be seen that the power consumption of the non-polarized LED (light-emitting diode) lighting apparatus according to the present invention is 0.3 W less than the power consumption of the general LED lighting apparatus.

1: Power supply 2: SMPS
3: light source 31: smoothing circuit

Claims (2)

An SMPS 2 for converting an alternating current applied from the power supply unit 1 into a direct current and outputting it as a direct current voltage suitable for driving an LED illumination lamp, And a light source unit 3 for controlling a light emitting operation of an LED lamp by a DC voltage output from the SMPS 2,
The power saving type non-polar circuit includes a smoothing circuit portion 31 to which a direct current is applied, and a plurality of non-polarity circuits, And forming the plurality of divided smoothing circuit portions (31) by connecting them in a parallel structure;
The power consumption of the power saving non-polar circuit is:
(Load side voltage + Smooth circuit voltage) × 1A (Output current) = Power consumption
here,
Load voltage (V) = LED (LED) Threshold voltage (Vf) × Serial LED (LED) Quantity
Smoothing circuit voltage (V) = Smoothing circuit forward voltage (V) + Smoothing circuit reverse voltage (Vf);
The non-polarized LED illumination device according to the present invention can reduce the power consumption of the non-polarized LED illumination device.

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