KR102778458B1 - The LED Lighting Module Equipped With Residual-Light Removal Function And Its Driving Method - Google Patents

Abstract

The present invention relates to an LED lighting module equipped with an afterglow phenomenon elimination function and a driving method thereof, and more specifically, to an LED lighting module equipped with an afterglow phenomenon elimination function and a driving method thereof, which eliminates the afterglow phenomenon in which the LED elements of the lighting fixture slightly emit light due to problems such as grounding even when the user turns off the switch by inserting an additional electric circuit into a lighting fixture substrate on which an LED element is mounted, thereby reducing unnecessary power consumption, extending the life of the LED element, and reducing eye fatigue of the user.

Description

LED lighting module equipped with residual-light removal function and its driving method {The LED lighting module equipped with residual-light removal function and its driving method}

The present invention relates to an LED lighting module equipped with an afterglow phenomenon elimination function and a driving method thereof, and more specifically, to an LED lighting module equipped with an afterglow phenomenon elimination function and a driving method thereof, which eliminates the afterglow phenomenon in which the LED elements of the lighting fixture slightly emit light due to problems such as grounding even when the user turns off the switch by inserting an additional electric circuit into a lighting fixture substrate on which an LED element is mounted, thereby reducing unnecessary power consumption, extending the life of the LED element, and reducing eye fatigue of the user.

In the past, lighting fixtures used light emitting diodes (LEDs) as light emitting diodes, while recently, they have been using LEDs (Light Emitting Diodes) as light emitting diodes due to their high energy efficiency and long lifespan. These LEDs are gradually expanding their use for various reasons, such as spatial advantages, energy efficiency, and the ability to control various brightness and color temperatures, and are replacing almost all lighting fixtures, not only for household, commercial, and industrial purposes, but also for street lights, automobiles, and traffic lights. In particular, LEDs are widely used as household lighting fixtures in products that mount multiple LED elements on one or more substrates, and since the size of the substrate and the number and arrangement of LED elements can be freely changed, they have functional and aesthetically superior features than other light emitting diodes.

Meanwhile, as the use of these household LED lighting fixtures expands, the frequency of damage caused by afterglow is gradually increasing. Afterglow is a phenomenon in which a small amount of light is emitted from each LED element of the lighting fixture even after the lighting switch of the lighting fixture is turned off. This is because the principle of light emission of the LED element is determined by the voltage applied to both ends of the LED element.

Specifically, for Class 1 lighting fixtures, the continuity of grounding must be satisfied by law. More specifically, for metal LED lighting fixtures corresponding to Class 1 lighting fixtures, the metal case of the lighting fixture and the case of the SMPS (Switching Mode Power Supply) that supplies power to the lighting fixture must both be connected to the common ground of the building where the lighting fixture is installed. In other words, if the lighting fixture and the lighting switch of the lighting fixture are installed normally, when the lighting switch is turned off, the voltage applied to the lighting fixture becomes 0, so the afterglow phenomenon does not occur.

However, in the case of the numerous lighting fixtures and lighting switches currently installed in the country, most of them were not installed properly due to workers' misjudgment or the construction environment, simply because they did not cause safety issues, and as a result, many users are suffering from the afterglow phenomenon.

Due to this problem, unnecessary power is consumed and energy is wasted due to the afterglow phenomenon. When the user turns off the lights to go to sleep, the lights do not turn off completely, which can cause eye fatigue. In addition, since each LED element does not turn off completely, the lifespan of the elements themselves is unnecessarily shortened, and other various problems and inconveniences occur.

Conventional technologies for eliminating this afterglow phenomenon include lighting devices for removing afterglow, such as Korean Patent No. 10-19971123. However, in the case of these conventional technologies, the afterglow phenomenon is eliminated through a separate component (e.g., SMPS or converter, etc.). From the user's perspective, it is technically difficult to additionally install or replace such a separate component in an existing LED lighting fixture, and there are also safety issues, so user accessibility is very poor. Therefore, even if the afterglow phenomenon occurs in an existing LED lighting fixture, a technology is required that allows the user to easily resolve it, and that can be easily applied in an environment where a new LED lighting fixture is installed, so that the afterglow phenomenon can be eliminated at a low cost.

Republic of Korea Patent No. 10-1997123 (2019.07.01.)

The present invention relates to an LED lighting module equipped with an afterglow phenomenon elimination function and a method for driving the same, and more specifically, to an LED lighting module equipped with an afterglow phenomenon elimination function and a method for driving the same, which eliminates the afterglow phenomenon in which the LED elements of the lighting fixture slightly emit light due to problems such as grounding even when the user turns off the switch by inserting an additional electric circuit into a lighting fixture substrate on which an LED element is mounted, thereby reducing unnecessary power consumption, extending the life of the LED element, and reducing eye fatigue of the user.

In order to solve the above-mentioned problem, in one embodiment of the present invention, an LED lighting module equipped with an afterglow phenomenon removal function is provided, comprising: a lighting fixture substrate including a plurality of LED elements; and a lighting fixture case physically and electrically directly connected to one surface of the lighting fixture substrate and including a metal material; wherein the lighting fixture substrate comprises: an LED section in which a plurality of LED elements are connected in series or in parallel and mounted; an SMPS connection section electrically connected to an external SMPS (Switching Mode Power Supply) to receive power; a dummy resistor section in which a resistor positioned between the LED section and the SMPS connection section is mounted; and a discharge circuit section including two or more bypass capacitors, the discharge circuit section being connected to a ground section of the lighting fixture case to discharge current of the lighting fixture substrate to a common ground; wherein the common ground is connected to both the ground section of the SMPS; and the ground section of the lighting fixture case.

In one embodiment of the present invention, when the switch for operating the LED module is in an on state, the LED lighting module can perform a first step of transmitting power received from the SMPS through the SMPS connection unit to the LED unit; and a second step of emitting light using the power received in the first step through the LED unit.

In one embodiment of the present invention, the emission circuit unit includes a first bypass capacitor and a second bypass capacitor, and when a switch for operating the LED lighting module is switched from an on state to an off state, the LED lighting module can perform a third step of discharging residual power of the LED unit by the dummy resistor unit; a fourth step of charging the residual power by the first bypass capacitor and the second bypass capacitor; and a fifth step of transferring some or all of the charged power to the grounding unit of the lighting fixture case by the first bypass capacitor and the second bypass capacitor.

In one embodiment of the present invention, the SMPS connection unit includes a first connection unit that transmits a first current received from the positive electrode of the SMPS to the first power transmission unit; and a second connection unit that transmits a second current received from the negative electrode of the SMPS to the second power transmission unit; and each of the first power transmission unit and the second power transmission unit can be connected to the emission circuit unit.

In one embodiment of the present invention, one end of the dummy resistor part may be simultaneously connected to the positive terminal of the first power transmission part and the LED part, and the other end of the dummy resistor part may be simultaneously connected to the negative terminal of the second power transmission part and the LED part.

In one embodiment of the present invention, the lighting fixture case includes a substrate fastening hole electrically connected to the lighting fixture substrate, and the lighting fixture substrate further includes a case fastening hole electrically connected to the lighting fixture case, wherein an interior of the case fastening hole and a predetermined area based on the case fastening hole are plated with a conductive material, and the substrate fastening hole and the case fastening hole are simultaneously connected through a grounding bolt and are combined in a form in which the substrate fastening hole can be electrically connected to a grounding portion of the lighting fixture case.

According to one embodiment of the present invention, by eliminating the afterglow phenomenon, it is possible to reduce eye fatigue of a user when the light is turned off.

According to one embodiment of the present invention, it is possible to reduce energy consumption in large-scale lighting systems and the like by preventing unnecessary energy consumption.

According to one embodiment of the present invention, the lifespan of an LED element included in an LED lighting device can be extended by eliminating the afterglow phenomenon.

According to one embodiment of the present invention, by eliminating the afterglow phenomenon, an LED lighting fixture can be completely turned off, and the effect of eliminating factors that harm aesthetic elements in terms of interior design can be achieved.

According to one embodiment of the present invention, by eliminating the afterglow phenomenon that may cause interference with electronic devices in an environment where sensitive electronic devices are used, the effect of minimizing noise generation can be achieved.

According to one embodiment of the present invention, by only replacing the LED lighting module in a lighting fixture having an afterglow phenomenon, even a user without sufficient electrical knowledge can easily and safely eliminate the afterglow phenomenon.

According to one embodiment of the present invention, the afterglow phenomenon can be eliminated by replacing only the LED lighting module while using the existing converter or SMPS as is, thereby achieving the effect of solving the problem caused by the afterglow phenomenon at a low cost.

According to one embodiment of the present invention, it is possible to stabilize grounding problems and prevent safety accidents such as electric shock.

FIG. 1 schematically illustrates a connection state between an LED lighting module and peripheral components according to one embodiment of the present invention.
Figure 2 schematically illustrates the internal configuration of an LED lighting module according to one embodiment of the present invention.
FIGS. 3 and 4 schematically illustrate a process of transmitting power received from an SMPS to an LED unit when a lighting switch according to one embodiment of the present invention is turned on.
FIG. 5 schematically illustrates a process in which power remaining in an LED is discharged when a lighting switch according to one embodiment of the present invention is switched from an on state to an off state.
FIG. 6 schematically illustrates the execution steps of a process in which power remaining in an LED unit is discharged according to one embodiment of the present invention.
Figures 7 to 9 schematically illustrate a direct-fixed type registration device case according to one embodiment of the present invention.
Figures 10 and 11 schematically illustrate a slide-type registration case according to another embodiment of the present invention.

Hereinafter, various embodiments and/or aspects are now disclosed with reference to the drawings. In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a general understanding of one or more aspects. It will be recognized, however, by one skilled in the art that such aspect(s) may be practiced without these specific details. The following description and the annexed drawings set forth specific exemplary aspects of one or more aspects in detail. It should be understood, however, that these aspects are exemplary and that any of the various methods of the principles of the various aspects may be utilized, and the description is intended to encompass all such aspects and their equivalents.

Additionally, various aspects and features will be presented by means of systems that may include a number of devices, components, and/or modules, etc. It is also to be understood and appreciated that various systems may include additional devices, components, and/or modules, etc., and/or may not include all of the devices, components, modules, etc. discussed in connection with the drawings.

The terms "embodiment," "example," "aspect," and "example" as used herein are not to be construed as implying that any aspect or design described is better or advantageous over other aspects or designs. The terms "part," "component," "module," "system," and "interface," as used below, generally refer to computer-related entities, and can refer to, for example, hardware, a combination of hardware and software, or software.

Additionally, it should be understood that the terms "comprises" and/or "comprising" imply the presence of the features and/or components, but do not preclude the presence or addition of one or more other features, components and/or groups thereof.

Also, terms including ordinal numbers such as first, second, etc. may be used to describe various components, but the components are not limited by the terms. The terms are only used to distinguish one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as the second component, and similarly, the second component may also be referred to as the first component. The term and/or includes a combination of a plurality of related described items or any item among a plurality of related described items.

In addition, in the embodiments of the present invention, unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by a person of ordinary skill in the art to which the present invention belongs. Terms defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning they have in the context of the relevant technology, and shall not be interpreted in an ideal or overly formal meaning unless explicitly defined in the embodiments of the present invention.

Figure 1 schematically illustrates a connection state between an LED lighting module and peripheral components according to one embodiment of the present invention.

As illustrated in FIG. 1, an LED lighting module equipped with an afterglow phenomenon removal function comprises: a lighting fixture substrate including a plurality of LED elements; and a lighting fixture case physically and electrically directly connected to one surface of the lighting fixture substrate and including a metal material; wherein the lighting fixture substrate comprises: an LED section in which a plurality of LED elements are connected in series or in parallel and mounted; an SMPS connection section electrically connected to an external SMPS (Switching Mode Power Supply) to receive power; a dummy resistor section in which a resistor positioned between the LED section and the SMPS connection section is mounted; and a discharge circuit section including two or more bypass capacitors and connected to a ground section of the lighting fixture case to discharge current of the lighting fixture substrate to a common ground; wherein the common ground is connected to both the ground section of the SMPS and the ground section of the lighting fixture case.

Specifically, the LED lighting module of the present invention is largely divided into a lighting substrate including a plurality of LED elements and a lighting case connected to the lighting substrate. At this time, only one lighting substrate is illustrated in FIG. 1, but this corresponds to one embodiment of the present invention, and according to another embodiment of the present invention, each of one or more lighting substrates may be physically and electrically connected to the lighting case, and each of the one or more lighting substrates may have different sizes or arrangements of internal elements, but include all of the technical features disclosed in this specification. Hereinafter, the technical features of the present invention will be described based on one lighting substrate.

As illustrated in FIG. 1, the LED lighting module (10000) of the present invention is connected to a common ground with an SMPS (3000) (Switching Mode Power Supply). The SMPS (3000) converts input AC power into DC power and supplies stable power to the LED lighting module (10000) of the present invention, and preferably includes a converter; or an electric/electronic component that performs the same function as the converter. When the lighting switch of the corresponding lighting fixture is turned on, the SMPS connection part (2200) of the lighting fixture substrate (2000) receives the DC power converted from the SMPS (3000), and preferably, with reference to FIG. 2, includes a first connection part (2210) and a second connection part (2220).

When the above lighting switch is turned on, the SMPS connection unit (2200) performs a first step of transmitting power received from the SMPS (3000) to the LED unit (2100). The LED unit (2100) includes a plurality of LED elements, and the plurality of LED elements are mounted on the lighting fixture substrate (2000). The plurality of LED elements are connected in series according to one embodiment of the present invention, but according to another embodiment of the present invention, some of the plurality of LED elements may be connected in series and the remaining some may be connected in parallel.

Meanwhile, as illustrated in Fig. 1, the power transmitted from the SMPS connection unit (2200) can be input to the LED unit (2100) via the dummy resistor unit (2300). Additional description of the dummy resistor unit (2300) will be provided later in the description of Fig. 2. When the power transmitted from the SMPS connection unit (2200) reaches the LED unit (2100), the LED unit (2100) performs a second step of emitting light using the received power.

Additionally, each of the SMPS connection unit (2200) and the dummy resistor unit (2300) is electrically connected to a discharge circuit unit (2400), and the discharge circuit unit (2400) is connected to a ground unit (1100) of the lighting case. When the lighting switch is switched from an on state to an off state, the discharge circuit unit (2400) discharges the remaining power in the LED unit (2100) or the entire lighting board (2000) to the ground unit (1100) of the lighting case. In addition, the discharge circuit unit (2400) not only discharges the current of the LED unit (2100) to the ground unit, but also prevents a reverse voltage from being applied to the LED unit (2100) due to a microvoltage of the common ground when the lighting switch is in the off state.

The above-mentioned emission circuit part (2400) is connected to the ground part (1100) of the corresponding lighting fixture case, and the ground part (1100) of the corresponding lighting fixture case is connected to a common ground. The above-mentioned common ground means, as an embodiment of the present invention, a ground commonly used in a building or place where the corresponding lighting fixture is installed. As mentioned above in [Technology forming the background of the invention], in the case of a Class 1 lighting fixture, the continuity of grounding must be satisfied by law, and according to the relevant regulation, as illustrated in FIG. 1, the ground part (3100) of the SMPS and the ground part (1100) of the lighting fixture case are both electrically connected to one common ground.

Meanwhile, as an embodiment of the present invention, as shown in FIG. 1, the grounding part (3100) of the SMPS and the grounding part (1100) of the lighting case may be separately connected to a common ground, but according to another embodiment of the present invention, the grounding part (3100) of the SMPS and the grounding part (1100) of the lighting case may be electrically connected to each other, and either the grounding part (3100) of the SMPS or the grounding part (1100) of the lighting case may be configured to be connected to the common ground.

The grounding part (1100) of the above-described lighting case is included in the above-described lighting case (1000), and it is preferable that part or all of the above-described lighting case (1000) be composed of a metal material. In addition, it is also preferable that the grounding part (3100) of the SMPS is included in the housing of the SMPS (3000). Additionally, in FIG. 1, the SMPS (3000) is depicted as being located outside the lighting case (1000), but this is not limited thereto, and according to another embodiment of the present invention, the SMPS (3000) may be provided inside the lighting case (1000) of the present invention.

As described above, the LED lighting module (10000) of the present invention can have the effect of eliminating the afterglow effect through the configuration illustrated in FIG. 1. Meanwhile, in the case of conventional LED lighting fixtures and corresponding switches, if they are installed/constructed normally, the afterglow phenomenon may not occur. However, in the construction/architectural reality of Korea, lighting fixtures and switches are rarely installed normally, and the present invention is an invention designed to solve this problem. More specifically, the wires that supply power to lighting fixtures include hot lines and line lines, and the switch of the lighting fixture is installed on the line line in principle. However, due to installation conditions or worker misjudgment, there are too many cases where the switch is installed on the hot line, and in such cases, even if the user operates the switch to the off state, the power to the lighting fixture is not completely cut off, so the afterglow phenomenon occurs.

Also, even if the switch is installed incorrectly, if the grounding of the lighting fixture is normal, the afterglow phenomenon can be eliminated, but in the case of metal LED lighting fixtures corresponding to Class 1 lighting fixtures under domestic law, they must all be grounded to the common ground of the place where the lighting fixture is installed. However, the common ground, which should be 0V in theory, has a small voltage, which causes the afterglow phenomenon. In other words, if the common ground has a small voltage and the switch is connected incorrectly, a small reverse voltage is applied to the LED module of the lighting fixture even if the user turns off the switch, which causes the afterglow phenomenon. Most of the reasons for the afterglow phenomenon are as described above, and even if the SMPS (3000) performs an afterglow phenomenon prevention function like many conventional technologies to eliminate the afterglow phenomenon, the afterglow phenomenon that occurs for the above reasons cannot be eliminated.

The present invention is an invention designed to prevent afterglow phenomenon from occurring even in an unusual domestic environment as described above, and has a technical feature of eliminating afterglow phenomenon through a configuration on a lighting fixture substrate (2000) on which a plurality of LED elements are mounted. Hereinafter, a detailed configuration of an LED lighting module (10000) of the present invention will be described.

Figure 2 schematically illustrates the internal configuration of an LED lighting module (10000) according to one embodiment of the present invention.

Schematically, FIG. 2 illustrates the internal configuration of the LED lighting module (10000) illustrated in FIG. 1 in more detail.

Specifically, the SMPS connection part (2200) includes a first connection part (2210) and a second connection part (2220). The output terminal of the SMPS (3000) includes a positive pole and a negative pole, and the first connection part (2210) receives a first current (positive current) from the positive pole ((+) pole) of the SMPS (3000), and the second connection part (2220) receives a second current (negative current) from the negative pole ((-) pole) of the SMPS (3000). Thereafter, the first connection part (2210) transmits the first current to the first power transmission part (2510), and the second connection part (2220) transmits the second current to the second power transmission part (2520). The first power transmission unit (2510) and the second power transmission unit (2520) are each configured to transmit power between electric/electronic devices, and only the minimum configuration for explaining the technical features of the present invention is illustrated in FIGS. 2 and 3.

As illustrated in FIG. 2, the first power transmission unit (2510) not only transmits the first current to the (+) pole of the LED unit (2100), but also transmits the residual power of the LED unit (2100) to the emission circuit unit (2400). Similarly, the second power transmission unit (2520) not only transmits the second current to the (-) pole of the LED unit (2100), but also transmits the residual power of the LED unit (2100) to the emission circuit unit (2400). The emission circuit unit (2400) emits the power remaining in the LED unit (2100) to the ground unit (1100) of the lighting fixture case when the lighting switch is in the off state, and at this time, the configuration of the dummy resistor unit (2300) can have the effect of discharging the residual power more quickly.

The above emission circuit unit (2400) includes a first bypass capacitor (2410) and a second bypass capacitor (2420), as illustrated in FIG. 2. A more detailed description of the emission circuit unit (2400) related thereto will be provided later in the description of FIG. 5.

FIGS. 3 and 4 schematically illustrate a process of transmitting power received from an SMPS (3000) to an LED unit (2100) when a lighting switch according to one embodiment of the present invention is turned on.

As shown in FIGS. 3 and 4, when the switch for operating the LED lighting module (10000) is in the on state, the LED lighting module (10000) performs a first step of transmitting power received from the SMPS (3000) to the LED unit (2100) by the SMPS connection unit (2200); and a second step of emitting light using the power received in the first step by the LED unit (2100).

Specifically, when the light switch is turned on, the SMPS connection part (2200) receives power from the SMPS (3000) and performs the first step of transmitting the received power to the LED part (2100). At this time, the power transmitted to the LED part (2100) is transmitted to the LED part (2100) through the dummy resistor part (2300), as illustrated in FIG. 3. Meanwhile, this means that the power transmitted to the LED part (2100), that is, the first current and the second current, do not reach the LED part (2100) through the resistor included in the dummy resistor part (2300), but rather reach the LED part (2100) through the dummy resistor part (2300) in the layout of the corresponding lighting fixture board (2000), as illustrated in FIG. 4. In addition, at this time, it is preferable to interpret that the arrows illustrated in FIGS. 3 and 4 do not actually illustrate the flow of current for each wire (the current in the actual second power transmission unit (2520) flows from the LED unit (2100) toward the SMPS connection unit (2200)) but illustrate the overall direction of power flow to help understand the explanation. As described above, when power is supplied to the LED unit (2100), the LED unit (2100) performs a second step of emitting light using the received power, and each of the plurality of LED elements mounted on the LED unit (2100) emits light until the first step is stopped.

FIG. 5 schematically illustrates a process in which power remaining in an LED unit (2100) is discharged when a lighting switch according to one embodiment of the present invention is switched from an on state to an off state.

As illustrated in FIG. 5, the emission circuit unit (2400) includes a first bypass capacitor (2410) and a second bypass capacitor (2420), and when a switch operating the LED lighting module (10000) is switched from an on state to an off state, the LED lighting module (10000) performs a third step in which residual power of the LED unit (2100) is discharged by the dummy resistor unit (2300); a fourth step in which the residual power is charged by the first bypass capacitor (2410) and the second bypass capacitor (2420); and a fifth step in which some or all of the charged power is transferred to the ground unit (1100) of the lighting device case by the first bypass capacitor (2410) and the second bypass capacitor (2420).

Specifically, as illustrated in FIG. 5, when the lighting switch is switched from an on state to an off state, the power transmitted from the SMPS connection unit (2200) to the LED unit (2100) is cut off, and a third step is performed in which the power remaining in the LED unit (2100) is discharged through the ground unit (1100) of the lighting fixture case. More specifically, the residual power of the LED unit (2100) is transmitted to the discharge circuit unit (2400) through the first power transmission unit (2510) and the second power transmission unit (2520), and at this time, the residual power of the LED unit (2100) can be discharged more quickly, that is, more quickly than when the dummy resistor unit (2300) is not present.

The above-described emission circuit unit (2400) includes a first bypass capacitor (2410) and a second bypass capacitor (2420), and the first bypass capacitor (2410) is connected to the first power transmission unit (2510), and the second bypass capacitor (2420) is connected to the second power transmission unit (2520). Each of the first bypass capacitor (2410) and the second bypass capacitor (2420) performs the function of alleviating voltage fluctuations by short-circuiting an AC signal to remove AC noise components, and when the light switch is in the off state, it performs the function of blocking power supplied to the LED unit (2100) from the common ground having a small voltage, thereby eliminating the afterglow phenomenon.

According to one embodiment of the present invention, each of the first bypass capacitor (2410) and the second bypass capacitor (2420) may be configured as the same element, but according to another embodiment of the present invention, the first bypass capacitor (2410) and the second bypass capacitor (2420) may be configured as different elements. In addition, although the present specification illustrates/describes each of the first bypass capacitor (2410) and the second bypass capacitor (2420) as if they were a single element, this corresponds to one embodiment of the present invention, and according to another embodiment of the present invention, each of the first bypass capacitor (2410) and the second bypass capacitor (2420) may be configured as two or more elements or modules that can perform the above-described role.

Additionally, as mentioned in the description of FIGS. 3 and 4, it is desirable to interpret the arrows shown in FIG. 5 as not actually showing the flow of current for each wire, but rather showing the overall direction of power movement to help understand the description.

When the power of the LED unit (2100) is transferred to the first bypass capacitor (2410) and the second bypass capacitor (2420), a fourth step is performed in which the power supplied to the discharge circuit unit (2400) is charged to the first bypass capacitor (2410) and the second bypass capacitor (2420), and then the first bypass capacitor (2410) and the second bypass capacitor (2420) perform a fifth step in which the power of the LED unit (2100) is discharged to a common ground through the grounding portion (1100) of the lighting fixture case. As one embodiment of the present invention, the emission circuit unit (2400) may be electrically connected to the ground unit (1100) of the lighting fixture case, and as another embodiment of the present invention, the emission circuit unit (2400) may be directly physically and electrically connected to the ground unit (1100) of the lighting fixture case.

FIG. 6 schematically illustrates the execution steps of a process in which power remaining in an LED unit (2100) is discharged according to one embodiment of the present invention.

Schematically, Figure 6 illustrates the execution steps of the process illustrated in Figure 5.

As illustrated in FIG. 6, when the lighting switch is switched from an on state to an off state (S10) by the user's operation, the power supplied to the LED unit (2100) is cut off, the residual power remaining in the LED unit (2100) is discharged (S20) through the dummy resistor unit (2300) and the emission circuit unit (2400), and the first bypass capacitor (2410) and the second bypass capacitor included in the emission circuit unit (2400) are charged (S30) by the residual power, and then some or all of the power charged in the first bypass capacitor (2410) and the second bypass capacitor (2420) is discharged (S40) to the ground unit (1100) of the lighting fixture case. At this time, the current flowing to the ground part (1100) of the lighting fixture case is prevented from flowing to the LED part (2100) by the first bypass capacitor (2410) and the second bypass capacitor (2420).

In the case of the LED lighting module (10000) of the present invention having the above-described configuration, as mentioned in the description of Fig. 1, it can exhibit the effect of eliminating the afterglow phenomenon caused by incorrect wiring of the switch or a reverse voltage phenomenon due to grounding, etc. In addition, the inventor of the present invention confirmed that in the case of the LED lighting module (10000) of the present invention, it can also eliminate the afterglow phenomenon caused by other causes than the above-mentioned causes of the afterglow phenomenon, for example, by using a switch other than a general switch (an electronic switch such as a lamp switch, a dimmer, a time switch, etc.) or by power remaining in a rectifier capacitor provided in an SMPS (3000).

Figures 7 to 9 schematically illustrate a direct-fixed type registration case (1000) according to one embodiment of the present invention.

In brief, FIGS. 7 to 9 illustrate shapes of the above-described registration case (1000) and a portion of the registration board (2000) viewed from various sides when the registration case (1000) described above corresponds to a direct fixing type, as an embodiment of the present invention.

As illustrated in FIGS. 7 to 9, the lighting fixture case (1000) includes a substrate fastening hole (1200) that is electrically connected to the lighting fixture substrate (2000), and the lighting fixture substrate (2000) further includes a case fastening hole (2600) that is electrically connected to the lighting fixture case (1000), wherein a conductive material is plated in the interior of the case fastening hole (2600) and a predetermined area based on the case fastening hole (2600), and the substrate fastening hole (1200) and the case fastening hole (2600) are simultaneously connected through a grounding bolt and are combined in a form in which the substrate fastening hole (1200) is electrically connected to a grounding portion (1100) of the lighting fixture case.

Specifically, as illustrated in FIGS. 7 to 9, the registration case (1000) includes a substrate fastening hole (1200), the registration substrate (2000) includes a case fastening hole (2600), and the substrate fastening hole (1200) and the case fastening hole (2600) can be joined via a grounding bolt. That is, it is preferable that there be a screw thread inside each of the substrate fastening hole (1200) and the case fastening hole (2600) to enable the grounding bolt to be fastened.

In addition, part or all of the registration case (1000) is made of a metal material, and preferably, the substrate fastening hole (1200) and a portion adjacent to the substrate fastening hole (1200) are made of a metal material. In addition, the interior of the case fastening hole (2600) and an area adjacent to the case fastening hole (2600) are plated with a conductive material such as copper, and the conductive material is depicted as a hatched area in FIGS. 7 to 11.

According to one embodiment of the present invention, the substrate fastening hole (1200) is electrically connected to the grounding portion (1100) of the lighting fixture case, so that residual power of the LED portion (2100) can be discharged to the common ground, and according to another embodiment of the present invention, the entire lighting fixture case (1000) can perform the role of the grounding portion (1100) of the lighting fixture case.

As one embodiment of the present invention, the outer surface of the lighting fixture case (1000), i.e., the surface to which the lighting fixture substrate (2000) is not coupled, may have a fin shape as shown in FIGS. 7 to 9, which may have the effect of efficiently discharging heat generated from the LED lighting module (10000) of the present invention.

In addition, although FIGS. 7 to 9 illustrate that one case fastening hole (2600) is arranged on one lighting fixture substrate (2000), this corresponds to only one embodiment of the present invention, and according to another embodiment of the present invention, a plurality of case fastening holes (2600) may be arranged on one lighting fixture substrate (2000), and as another embodiment of the present invention, when the LED lighting module (10000) includes a plurality of lighting fixture substrates (2000), each of the plurality of lighting fixture substrates (2000) may include one or more case fastening holes (2600), and it is preferable that the lighting fixture case (1000) is arranged with a substrate fastening hole (1200) corresponding to each of all the case fastening holes (2600) included in the LED lighting module (10000).

Figures 10 and 11 schematically illustrate a slide-type registration case (1000) according to another embodiment of the present invention.

As illustrated in FIGS. 10 and 11, the light fixture case (1000) includes a fastening groove to which both sides of the light fixture substrate (2000) can be fastened in a sliding manner, and the light fixture substrate (2000) further includes a case fastening hole (2600) that is electrically connected to the light fixture case (1000), and in an area adjacent to the case fastening hole (2600), a member that is made of a conductive material and is electrically connected to the grounding portion (1100) of the light fixture case; and the emission circuit portion (2400); is arranged.

Specifically, the lighting fixture case (1000) illustrated in FIGS. 10 and 11 is a different embodiment from the embodiments described in FIGS. 7 to 9, and corresponds to a slide-type lighting fixture case (1000), and FIG. 10 illustrates a lower surface of a lighting fixture substrate (2000) coupled to the slide-type lighting fixture case (1000), and FIG. 11 illustrates an upper surface of a lighting fixture substrate (2000) coupled to the slide-type lighting fixture case (1000). At this time, the lower surface of the lighting fixture substrate (2000) corresponds to a surface that contacts one surface of the lighting fixture case (1000) at a predetermined interval, and the upper surface of the lighting fixture substrate (2000) corresponds to a surface on which a plurality of LED elements mounted on the lighting fixture substrate (2000) emit light.

In the case of the above slide type of the registration case (1000), a separate grounding bolt is not required, so there is an advantage in that the registration board (2000) and the registration case (1000) can be easily separated and joined, and damage to the registration board (2000) or the registration case (1000) that may occur during the process of fastening or disassembling the grounding bolt can be prevented.

As shown in FIGS. 10 and 11, a conductive material member is placed in an area adjacent to a case fastening hole (2600) of a lighting fixture substrate (2000), and the member is electrically connected to a grounding portion (1100) of the lighting fixture case; and the emission circuit portion (2400); so that when the lighting switch is switched from an on state to an off state, power remaining in the LED portion (2100) can be discharged to the common ground.

According to one embodiment of the present invention, by eliminating the afterglow phenomenon, it is possible to reduce eye fatigue of a user when the light is turned off.

According to one embodiment of the present invention, it is possible to reduce energy consumption in large-scale lighting systems and the like by preventing unnecessary energy consumption.

According to one embodiment of the present invention, the lifespan of an LED element included in an LED lighting device can be extended by eliminating the afterglow phenomenon.

According to one embodiment of the present invention, by eliminating the afterglow phenomenon, an LED lighting fixture can be completely turned off, and the effect of eliminating factors that harm aesthetic elements in terms of interior design can be achieved.

According to one embodiment of the present invention, by eliminating the afterglow phenomenon that may cause interference with electronic devices in an environment where sensitive electronic devices are used, the effect of minimizing noise generation can be achieved.

According to one embodiment of the present invention, by only replacing the LED lighting module in a lighting fixture having an afterglow phenomenon, even a user without sufficient electrical knowledge can easily and safely eliminate the afterglow phenomenon.

According to one embodiment of the present invention, the afterglow phenomenon can be eliminated by replacing only the LED lighting module while using the existing converter or SMPS as is, thereby achieving the effect of solving the problem caused by the afterglow phenomenon at a low cost.

According to one embodiment of the present invention, it is possible to stabilize grounding problems and prevent safety accidents such as electric shock.

Although the embodiments have been described above by way of limited examples and drawings, those skilled in the art may make various modifications and variations from the above description. For example, appropriate results may be achieved even if the described techniques are performed in a different order than the described method, and/or components of the described system, structure, device, circuit, etc. are combined or combined in a different form than the described method, or are replaced or substituted by other components or equivalents.

Therefore, other implementations, other embodiments, and equivalents to the claims are also included in the scope of the claims described below.

Claims (6)

This is an LED lighting module equipped with an afterglow removal function.
A lighting fixture substrate including a plurality of LED elements; and
A registration case including a metal material and directly connected physically and electrically to one side of the registration board;
The above registration board is,
An LED section in which multiple LED elements are connected in series or parallel;
SMPS connection that is electrically connected to an external SMPS (Switching Mode Power Supply) and receives power;
A dummy resistor section having a resistor mounted between the LED section and the SMPS connection section to have the effect of discharging residual power; and
A discharge circuit section including a first bypass capacitor and a second bypass capacitor, and connected to a ground section of the light fixture case to discharge the current of the light fixture board to a common ground;
The above common ground is electrically connected to both the ground of the SMPS and the ground of the lighting fixture case, and means a ground commonly used in a building or place where the lighting fixture is installed.
The first bypass capacitor is arranged between the first power transmission unit that transmits power between the SMPS connection unit and the LED unit; and the ground unit of the lighting fixture case;
The second bypass capacitor is arranged between the second power transmission unit that transmits power between the SMPS connection unit and the LED unit; and the ground unit of the lighting fixture case;
A resistance element included in the dummy resistor section is placed between the first power transmission section and the second power transmission section.
When the switch that operates the above LED lighting module is switched from on to off,
A step in which the residual power of the LED part is discharged by the dummy resistor part;
A step in which the residual power is charged by the first bypass capacitor and the second bypass capacitor; and
A step of transmitting some or all of the charged power to the grounding part of the registration case by the first bypass capacitor and the second bypass capacitor is performed;
An LED lighting module, wherein each of the first bypass capacitor and the second bypass capacitor short-circuits an AC signal to remove AC noise components, thereby alleviating voltage fluctuations and blocking power supplied to the LED unit from the common ground.
In claim 1,
When the switch that operates the above LED lighting module is on,
The above LED lighting module,
A first step of transmitting power received from the SMPS to the LED section through the SMPS connection section; and
An LED lighting module that performs a second step of emitting light using the power received in the first step by the LED unit.
delete In claim 1,
The above SMPS connection part is,
A first connector for transmitting a first current received from the positive electrode of the SMPS to a first power transmission unit; and
A second connection unit for transmitting a second current received from the cathode of the SMPS to a second power transmission unit;
An LED lighting module, wherein each of the first power transmission unit and the second power transmission unit is connected to the emission circuit unit.
In claim 4,
One end of the above dummy resistor part is simultaneously connected to the positive terminal of the first power transmission part and the LED part,
An LED lighting module, wherein the remaining end of the above dummy resistor section is simultaneously connected to the negative terminal of the second power transmission section and the LED section.
In claim 1,
The above registration case is,
Includes a substrate fastening hole electrically connected to the above-mentioned registration board,
The above registration board is,
A case fastening hole electrically connected to the above-mentioned registration case is further included, wherein the interior of the case fastening hole and a predetermined area based on the case fastening hole are plated with a conductive material,
The above substrate fastening hole and the above case fastening hole are connected simultaneously through a grounding bolt,
The above-mentioned substrate fastening hole is an LED lighting module that is electrically connected to the grounding part of the above-mentioned lighting device case.

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