KR102548421B1 - Led lighting device having current regulator using converter output current - Google Patents

Abstract

The present invention relates to an LED lighting device having a current regulator using a converter output current, and more specifically, to an LED lighting device having a current regulator using a converter output current, wherein, as for a lighting device which lights an indirect lighting lamp and a direct lighting lamp by means of a single converter, when the indirect lighting lamp and the direct lighting lamp are simultaneously lighted, the current flowing to the indirect lighting lamp may be regulated such that the brightness of the indirect lighting lamp may be lower than the lightness of the direct lighting lamp. To this end, the LED lighting device having a current regulator using a converter output current according to one embodiment of the present invention comprises: a first converter which converts an alternating current power source into a direct current power source to output the same; an indirect lighting unit which is lighted by power applied from the first converter; and a direct lighting unit which is lighted by power applied from the first converter. Here, a current regulator for one circuit is configured at the input end of the indirect lighting unit to limit the flow of the current such that the current applied to the indirect lighting unit may flow by a relatively smaller amount that the current applied to the direct lighting unit.

Description

LED lighting device equipped with a current regulator using converter output current {LED LIGHTING DEVICE HAVING CURRENT REGULATOR USING CONVERTER OUTPUT CURRENT}

The present invention relates to an LED lighting device equipped with a current regulator using a converter output current, and more particularly, in a lighting device that turns on an indirect lighting lamp and a direct lighting lamp through a single converter, the indirect lighting lamp and the direct lighting lamp are The present invention relates to an LED lighting device equipped with a current regulator using a converter output current capable of controlling the current flowing to an indirect lighting lamp when they are simultaneously turned on so that the brightness of the indirect lighting lamp is relatively lower than that of the direct lighting lamp.

LED (Light Emitting Diode) element is a device that converts electrical signals into infrared rays or light by using compound semiconductor characteristics. It has the advantage of long life. In addition, compared to conventional light sources, it consumes low power, has excellent visibility due to a high color temperature, and has low glare.

A lighting device using LED is directly illuminated by allowing the light emitted from the LED, which is a light source, to be transmitted through a glass cover or an acrylic cover. It has the advantage of providing a bright environment through high illumination, but has the disadvantage of causing glare. .

In addition, there is an indirect lighting type lighting device in which light emitted from an LED is indirectly irradiated so as to have a predetermined angle with a direction in which light is irradiated. For example, light is irradiated on a ceiling/wall/reflector and illuminated with reflected light. This indirect lighting has the advantage of implementing a soft lighting effect and suppressing glare caused by a light source because the light source is not visible from the outside. There is a disadvantage in that shadows are generated in some areas according to the reflection of light.

Accordingly, as a lighting device capable of realizing direct lighting and indirect lighting through a single lighting device, a light guide plate lighting device divided into a direct lighting unit and an indirect lighting unit is disclosed in Korean Patent Registration No. 10-1776004.

According to the above technology, the light guide plate is divided into a plurality of zones so that some zones function as a lighting device responsible for lighting, and the other zones have an indirect lighting function with low luminance.

In addition, an LED lighting fixture provided with an auxiliary lighting lamp is disclosed in Publication No. 10-2017-0057186.

In the above technology, in an LED lighting fixture using an LED as a light source, an auxiliary lighting lamp for radiating light sideways is detachably installed on the side of a light cover or frame, thereby providing main lighting and auxiliary lighting according to the brightness of the surroundings. It is configured so that it can be turned on selectively.

Lighting apparatuses equipped with direct lighting and indirect lighting at the same time each have a converter for driving them. That is, a converter supplying power to the direct lighting and a converter supplying power to the indirect lighting are configured separately, and the direct lighting and the indirect lighting are turned on separately or simultaneously through the respective converters.

However, in the case of a lighting device that implements indirect lighting and direct lighting through two converters, as the number of converters increases, manufacturing cost and weight increase as well. there is.

Accordingly, the direct lighting and the indirect lighting may be individually turned on or simultaneously turned on using one converter, but the following problems occur.

1. In the case of lighting both direct and indirect lighting with one converter, the intensity of indirect lighting must be kept relatively lower than that of direct lighting to create an atmosphere created by indirect lighting.

2. When the number of direct lighting lamps is used relatively less than the number of indirect lighting lamps to create an atmosphere by indirect lighting, there is a disadvantage in that shadows are generated at locations where LED lamps are omitted.

3. Therefore, in order to minimize the occurrence of shadows due to the lighting of indirect lighting, if the number of lamps of indirect lighting is increased and the number of lamps of indirect lighting is relatively larger than the number of lamps of direct lighting, the amount of current applied to indirect lighting is directly There is a problem in that the amount of current applied to the lighting is relatively higher than that of the direct lighting, so that the illuminance of the indirect lighting is relatively higher than that of the direct lighting.

As a result, when direct lighting and indirect lighting are turned on simultaneously using one converter, the number of indirect lighting lamps should be relatively greater than the number of direct lighting lamps in order to minimize the occurrence of shadows from indirect lighting, whereas the current applied to indirect lighting should be less than the current applied by direct lighting.

Registered Patent Publication No. 10-1776004 (2017. 09. 01.) Publication No. 10-2017-0057186 (2017. 05. 24.)

The present invention was created to solve the problems of the prior art as described above, and the problem to be solved in the present invention is to turn on indirect lighting and direct lighting with a converter, and the number of lamps of indirect lighting is relatively higher than the number of lamps of direct lighting. In the lighting device, when indirect lighting and direct lighting are turned on at the same time, the amount of current applied to the indirect lighting is relatively smaller than the amount of current applied to the direct lighting, so that the illuminance of the indirect lighting is adjusted to be relatively lower than the illuminance of the direct lighting. It is to provide an LED lighting device equipped with a current regulator using a converter output current to be.

An LED lighting device equipped with a current regulator using a converter output current according to an embodiment of the present invention for solving the above problems includes a first converter for converting AC power into DC power and outputting it; an indirect lighting unit that is turned on by power applied from the first converter; And a direct lighting unit turned on by power applied from the first converter, configured at an input terminal of the indirect lighting unit, so that the current applied to the indirect lighting unit flows relatively less than the current applied to the direct lighting unit. It is characterized in that the current regulator 1 circuit for limiting the flow is configured.

Here, the current regulator for one circuit may be configured to adjust the current by a combination of resistors.

Alternatively, the current regulator for one circuit may be configured to control current by a combination of diodes.

At this time, the current controller 1 circuit may be composed of a resistor array having a variable resistance value according to the operation of a switch or a diode array having a variable resistance value according to the operation of a switch.

In addition, the current regulator for one circuit may include a variable resistor.

In addition, the current controller for one circuit is characterized in that when the indirect lighting unit and the direct lighting unit are turned on at the same time, the current applied to the indirect lighting unit is controlled.

In addition, a second converter for supplying power to the direct lighting unit; It is installed between the first converter and the second converter to protect power output from the first converter and to prevent the output power of the second converter from flowing into the first converter. can do.

According to the present invention, when the indirect lighting and the direct lighting are turned on by the converter, even if the number of lamps of the indirect lighting is relatively greater than the number of lamps of the direct lighting, the amount of current applied to the indirect lighting is relatively less than the amount of current applied to the direct lighting. It has the advantage of creating a mood effect by lighting.

In addition, since the number of indirect lighting lamps is relatively greater than the number of direct lighting lamps, shadows caused by indirect lighting can be minimized.

In addition, since the current applied to the indirect lighting can be adjusted, there is an advantage in that the indirect lighting can be controlled by dimming.

1 is a schematic configuration diagram for turning on conventional indirect lighting and direct lighting;
2 is a schematic circuit diagram of an LED lighting device equipped with a current regulator using a converter output current according to the present invention;
3 is a view showing the rear side of an LED lighting device equipped with a current regulator using a converter output current according to an embodiment of the present invention;
4 is a view showing the front of an LED lighting device equipped with a current regulator using a converter output current according to an embodiment of the present invention;
5 is a configuration diagram for a current regulator 1 circuit according to an embodiment applied to an LED lighting device equipped with a current regulator using a converter output current according to the present invention;
6 shows a schematic circuit diagram of another embodiment applied to an LED lighting device equipped with a current regulator using a converter output current according to the present invention.

Hereinafter, with reference to the accompanying drawings, embodiments of the present invention will be described in detail so that those skilled in the art can easily carry out the present invention. However, this is not intended to limit the present invention to specific embodiments, and should be understood to include all modifications, equivalents, or substitutes included in the spirit and technical scope of the present invention.

It is understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, but other elements may exist in the middle. It should be.

On the other hand, when an element is referred to as “directly connected” or “directly connected” to another element, it should be understood that no other element exists in the middle.

Terms used in this specification are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly dictates otherwise. In this application, the terms "include" or "have" are intended to designate that there is a feature, number, process, operation, component, part, or combination thereof described in the specification, but one or more other features It should be understood that the presence or addition of numbers, processes, operations, components, parts, or combinations thereof is not precluded.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having meanings consistent with the meanings in the context of the related art, and unless explicitly defined in this application, they should not be interpreted in ideal or excessively formal meanings. don't

The term "MODULE" described in this specification refers to a unit that processes a specific function or operation, and may mean hardware or software or a combination of hardware and software.

The terms or words used in this specification and claims should not be construed as being limited to ordinary or dictionary meanings, and the inventors may appropriately define the concept of terms in order to explain their invention in the best way. Based on the principle that there is, it should be interpreted as meaning and concept consistent with the technical spirit of the present invention. In addition, unless there is another definition in the technical terms and scientific terms used, they have meanings commonly understood by those of ordinary skill in the art to which this invention belongs, and the gist of the present invention is described in the following description and accompanying drawings. Descriptions of well-known functions and configurations that may be unnecessarily obscure are omitted. The drawings introduced below are provided as examples to sufficiently convey the spirit of the present invention to those skilled in the art. Accordingly, the present invention may be embodied in other forms without being limited to the drawings presented below. Also, like reference numerals denote like elements throughout the specification. It should be noted that like elements in the drawings are indicated by like reference numerals wherever possible.

Figure 1 shows a schematic configuration diagram for turning on the conventional indirect lighting and direct lighting, Figure 1 (a) shows a configuration circuit diagram consisting of the same number of lamps in the indirect lighting unit and direct lighting unit, Figure 1 (b) shows a configuration circuit diagram in a state in which the number of lamps in the indirect lighting unit is relatively greater than the number of lamps in the direct lighting unit.

Referring to (a) of FIG. 1 , the indirect lighting unit 21a and the direct lighting unit 22a are turned on using the converter 10a, and the number and arrangement of lamps of the indirect lighting unit 21a and the direct lighting unit 22a are In the same configuration, when the indirect lighting unit 21a and the direct lighting unit 22a are simultaneously turned on, the current applied to the indirect lighting unit 21a and the direct lighting unit 22a are equal.

Accordingly, the indirect lighting unit 21a and the direct lighting unit 22a are lit with the same illuminance, but the distance at which light is irradiated by lighting of the indirect lighting unit 21a is the distance at which light is irradiated by lighting of the direct lighting unit 22a. Since it is relatively short, there is a disadvantage in that a shadow is generated in some of the areas irradiated with light by turning on the indirect lighting unit 21a.

Therefore, in order to minimize the occurrence of shadows, the number of lamps of the indirect lighting unit 21a may be configured to be relatively larger than the number of lamps of the direct lighting unit 22a to be turned on.

For example, as shown in (b) of FIG. 1, 12 lamps are connected in series in one array, and 12 lamps are connected in parallel to form an indirect lighting unit 21a, and 12 lamps are connected in series in one array. When the indirect lighting unit 21a and the direct lighting unit 22a are turned on at the same time in a state in which the direct lighting unit 22a is configured by connecting six arrays in parallel, the load of the indirect lighting unit 21a is directly illuminated by the direct lighting unit 22a. Since the load (load) of is reduced to 1/2, the current applied to the indirect lighting unit 21a is doubled compared to the current applied to the direct lighting unit 22a.

That is, as the current applied to the indirect lighting unit 21a is relatively higher than the current applied to the direct lighting unit 22a, the brightness (illuminance) of the indirect lighting unit 21a is higher than the brightness (illuminance) of the direct lighting unit 22a. A relatively high problem arises.

Figure 2 shows a schematic circuit diagram of an LED lighting device equipped with a current regulator using a converter output current according to the present invention.

Referring to FIG. 2, an LED lighting device equipped with a current controller using a converter output current according to the present invention is for a first converter 10, an indirect lighting unit 21, a direct lighting unit 22, and a current controller 1 circuit. It is composed of (30).

The first converter 10 performs a function of receiving power (AC power) and converting it into DC power and outputting it, and the output power is applied to the indirect lighting unit 21 and the direct lighting unit 22.

The indirect lighting unit 21 and the direct lighting unit 22 are configured to be turned on or off according to the operation of the switch (or dimming signal) using the power output from the first converter 10 .

The indirect lighting unit 21 may be configured to be illuminated by radiating light from a lighting device to a wall, ceiling, or reflector.

Figure 3 shows the back of the LED lighting device equipped with a current regulator using a converter output current according to an embodiment of the present invention.

An indirect lighting unit 21 is configured on the back (rear surface) of the LED lighting device equipped with a current regulator using a converter output current according to an embodiment.

The indirect lighting unit 21 is installed on the rear edge of the LED lighting device of the present invention, is disposed along the edge, and illuminates the surface (wall or ceiling, etc.) on which the LED lighting device is installed.

4 is a front view of an LED lighting device equipped with a current regulator using a converter output current according to an embodiment of the present invention.

A direct lighting unit 22 is configured on the front (front surface) of the LED lighting device equipped with a current regulator using a converter output current according to an embodiment.

The direct lighting unit 22 is arranged and installed in front of the LED lighting device of the present invention, and illuminates the front surface (wall or ceiling, etc.) on which the LED lighting device is installed.

As shown in FIGS. 3 and 4, the indirect lighting unit 21 should irradiate light by narrowing the space between the lamps (LEDs) in order to minimize the shadow area while illuminating the wall or ceiling, and the direct lighting unit 22 Light is irradiated toward the direct downward direction (or the front part). Therefore, as shown in FIG. 2 , the number of lamps of the indirect lighting unit 21 is relatively greater than that of the direct lighting unit 22 .

When the number of lamps in the indirect lighting unit 21 is composed of relatively more lamps than the number of lamps in the direct lighting unit 22, the amount of current applied to the indirect lighting unit 21 is relatively greater than the amount of current applied to the direct lighting unit 22. .

For example, as shown in FIG. 2, the indirect lighting unit 21 is configured by connecting 12 lamps in series to form one array and connecting 12 lamps in parallel to one array. When two lamps are connected in series to form one array and six lamps are connected in parallel to one array, twice as much current is applied to the indirect lighting unit 21 as compared to the direct lighting unit 22 .

The current regulator 1 circuit 30 is configured at the input terminal of the indirect lighting unit 21, so that the current output from the first converter 10 and the current applied to the indirect lighting unit 21 is transmitted to the direct lighting unit 22. It performs the function of limiting the flow of current so that it flows relatively less than the applied current.

The current regulator 1 circuit (30) includes at least two or more current limiters.

The current limiter may be composed of an element capable of limiting the flow of current, and a resistor or a diode may be selected as a representative element.

Resistors are linear elements and can be configured in series or parallel combinations.

For example, it may be configured to approach a set resistance value by connecting several resistors in series or parallel. At this time, if several resistors are connected in series or parallel, the error of the total resistance value is reduced stochastically.

That is, in the process of delaying the flow of current and dropping the voltage, the resistance absorbs electrical energy and releases it as heat.

Therefore, the current limiter (resistor) of the present invention should be configured to have an appropriate resistance value to limit the current applied to the indirect lighting unit 21 at an appropriate level.

5 shows a configuration for one current regulator circuit according to an embodiment applied to an LED lighting device equipped with a current regulator using a converter output current according to the present invention.

Referring to FIG. 5 attached, the current controller 1 circuit applied to the present invention may include a switch 31 and a resistance array 32.

The switch 31 selects a power line connected to the indirect lighting unit 21 and inputs one resistance array selected from among the resistance arrays 32 to be described later into the circuit. The switch 31 may include a toggle switch, a dip switch, a rotary switch, or a slide switch. Alternatively, according to design conditions, the switch may be configured using a semiconductor device such as a transistor.

The resistor array 32 is composed of series, parallel, or series/parallel combinations of resistors, and resistor arrays having various resistance values are put into the circuit according to the selection of the switch 31 .

That is, according to the selection of the switch 31, an array having a series combination resistance value, a parallel combination resistance value, or a series/parallel combination resistance value among the resistance arrays 32 is input into the circuit.

At this time, the resistance value input to the circuit through the resistance array 32 is based on the amount of current to be limited.

In other words, it is possible to set the brightness of the indirect lighting unit 21 according to the resistance value applied to the indirect lighting unit 21 through the current regulator 1 circuit 30, and when the resistance value increases, the indirect lighting unit 21 is applied When the current value decreases and, conversely, when the resistance value decreases, the current value applied to the indirect lighting unit 21 increases.

Therefore, the indirect lighting unit 21 can be dimmed according to the resistance value applied to the indirect lighting unit 21 through the current regulator 1 circuit 30 .

As a more specific example, the current applied to the indirect lighting unit 21 may be limited according to the selection of the resistor array, and dimming control may also be performed according to the current limitation.

Preferably, the current applied to the indirect lighting unit 21 is adjusted within a range of 20 to 25% of the output current of the first converter 10, and the remaining current may be applied to the direct lighting unit 22. .

In the above, when the current applied to the indirect lighting unit 21 is less than 20% of the output current of the first converter 10, the brightness of lighting by the direct lighting unit 22 is higher than the brightness of lighting by the indirect lighting unit 21. Since it is relatively very bright, there is a disadvantage that the mood effect caused by indirect lighting is offset. In addition, when the current applied to the indirect lighting unit 21 exceeds 25% of the output current of the first converter 10, the brightness of the indirect lighting unit is similar to or relatively brighter than that of the direct lighting unit 22, and thus directly There is a disadvantage in that the entire room becomes dark because sufficient illuminance cannot be realized by lighting.

In the above, the configuration of limiting the current using a resistor has been described, but a diode may be configured instead of the resistor.

Diodes are usually assumed to have a constant terminal voltage with no internal resistance, but in reality they have an internal resistance of 5 to 20. Accordingly, the current applied to the indirect lighting unit may be controlled by using a series combination, a parallel combination, or a series/parallel combination of diodes or diode arrays instead of a resistor or resistor array.

6 shows a schematic circuit diagram of another embodiment applied to an LED lighting device equipped with a current regulator using a converter output current according to the present invention.

Referring to FIG. 6 attached, a second converter 12 for directly applying output power to the direct lighting unit 22 may be further included.

The second converter 12 converts AC power, which is commercial power, into DC power and directly supplies it to the lighting unit 22 .

The output current of the first converter 10 supplies current to the indirect lighting unit 21 and the direct lighting unit 22, and the second converter 12 supplies current only to the direct lighting unit 22, and two converters It is a lighting device constructed using (2 circuits).

At this time, as the output currents of the first converter 10 and the second converter 12 are combined and applied to the direct lighting unit 22, the output current of the second converter 12 flows into the first converter 10. However, when the output current of the second converter 12 flows into the first converter 10, the output of the first converter 10 becomes unstable and the internal circuitry may burn out.

Accordingly, it is installed between the first converter 10 and the second converter 12 to protect the power output from the first converter 10 and the output power of the second converter 12 to the first converter. A current regulator 2-circuit (40) is configured to prevent flow into (10).

The current regulator 2 circuit 40 may include an element such as a diode or a thyristor, and prevents the output power of the second converter 12 from being applied to the first converter 10. .

In addition, the output current of the second converter 12 is involved only in the direct lighting unit 22, so that the current applied to the direct lighting unit 22 flows relatively more than the current applied to the indirect lighting unit 22, The output current of the second converter 12 may be configured to be higher than the output current of the first converter 10 .

According to the present invention, when the indirect lighting and the direct lighting are turned on by the converter, even if the number of lamps of the indirect lighting is relatively greater than the number of lamps of the direct lighting, the amount of current applied to the indirect lighting is relatively less than the amount of current applied to the direct lighting. A mood effect can be created by lighting, and the number of indirect lighting lamps is relatively greater than the number of direct lighting lamps, thereby minimizing shadows caused by indirect lighting.

In addition, since the current applied to the indirect lighting can be adjusted, there is an advantage in that the indirect lighting can be controlled by dimming.

The present invention described above with reference to the accompanying drawings is capable of various modifications and changes by those skilled in the art, and such modifications and changes should be construed as being included in the scope of the present invention.

10: first converter 12: second converter
21: indirect lighting unit 22: direct lighting unit
30: for current regulator 1 circuit 31: switch
32: resistance array 40: for current regulator 2 circuit

Claims (8)

A first converter that converts AC power into DC power and outputs it;
an indirect lighting unit that is turned on by power applied from the first converter;
a direct lighting unit that is turned on with power applied from the first converter and is connected in parallel with the indirect lighting unit; and
A current regulator configured at an input terminal of the indirect lighting unit and limiting the flow of current so that the current applied to the indirect lighting unit flows relatively less than the current applied to the direct lighting unit, For 1 circuit,
For the current regulator 1 circuit,
A resistance array in which a plurality of resistors are serially combined, a plurality of resistors are combined in parallel, and a plurality of resistors are mixed in series and in parallel, respectively, and a resistance array connected in parallel, and for selecting one of the series combination, parallel combination, and mixed combination made of switches
An LED lighting device equipped with a current regulator using a converter output current. delete The method of claim 1,
For the current regulator 1 circuit,
Characterized in that the current is controlled by a diode instead of the resistor
An LED lighting device equipped with a current regulator using a converter output current. delete delete The method of claim 1,
For the current regulator 1 circuit,
Characterized in that it includes a variable resistor
An LED lighting device equipped with a current regulator using a converter output current. The method of claim 1,
For the current regulator 1 circuit,
When the indirect lighting unit and the direct lighting unit are turned on at the same time, controlling the current applied to the indirect lighting unit
An LED lighting device equipped with a current regulator using a converter output current. The method of claim 1,
a second converter supplying power to the direct lighting unit; and
For a current regulator 2 circuit installed between the first converter and the second converter to protect power output from the first converter and to prevent the output power of the second converter from flowing into the first converter
characterized in that it further comprises
An LED lighting device equipped with a current regulator using a converter output current.

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