KR102262415B1 - Disinfectant illuminating apparatus - Google Patents

Abstract

Disclosed is a sterilization lighting device. According to an embodiment of the present invention, the sterilization lighting device forms a first plane. The sterilization lighting device comprises: a first LED arranged along a circumference of the first plane; a light guide plate disposed at a rear of the first LED to correspond to the first plane and having a plurality of light guide patterns capable of changing a path of first light emitted from the first LED; and a second LED provided on a rear surface of the light guide plate to correspond to the first plane and configured to cross the light guide patterns each other to emit second light forward.

Description

DISINFECTANT ILLUMINATING APPARATUS

The present invention relates to a sterilization lighting device, and more particularly, to a sterilization lighting device capable of implementing a sterilization function together with a lighting function.

A light emitting diode (LED) is a light emitting device made of a semiconductor capable of converting electrical energy into light energy. Light emitting devices are widely used in various fields because of their long lifespan and low power driving.

The LED lighting device can be used as lighting by emitting an LED light source to the outside. In order to use the light of the LED having straightness as a lighting device, a diffuser sheet is provided to scatter the light into a space where attenuation occurs on the diffusion path. This is to spread the light in the space by expanding and scattering the LED light irradiated in a certain direction to the diffusion sheet, thereby uniformizing the luminance.

According to the arrangement method of the LED in the lighting device, it can be divided into edge lighting and direct lighting.

The edge-type lighting device converts the light emitted from the LED installed on the side to a surface light source by a vertically provided light guide plate, so that the LED is mounted perpendicularly to the substrate. On the other hand, in the direct-type lighting device, the light emitted from the LED provided under the light guide plate is directed toward the front light guide plate, and the LED is mounted horizontally with the substrate.

In addition, lighting devices are divided into infrared, visible, and ultraviolet according to the wavelength of light. Among them, UV LED has an excellent sterilization effect as it can remove bacteria with DNA or RNA, but when the human body is exposed to ultraviolet rays, it penetrates to the dermis and causes photoaging. There was a problem that caused skin damage such as erythema or blisters, DNA changes, as well as skin cancer.

In lighting devices such as Korean Unexamined Publication No. 10-2020-0108734, LEDs in a wavelength range of 400 to 430 nm are used to increase sterilization performance and not harm the human body, but when a diffusion sheet is used together with LEDs in a wavelength band of 400 to 430 nm , there was a problem in that the sterilization function was significantly lowered due to the decrease in the transmittance of the diffusion sheet in the 400-430 nm wavelength band having a sterilization effect.

Korean Publication No. 10-2020-0108734 (Published date: 2020.09.21.)

One technical problem to be solved by the present invention relates to a sterilization lighting device capable of providing a clean environment by sterilizing harmful bacteria while providing bright lighting.

The technical problem to be solved by the present invention is not limited to the above.

In order to solve the above technical problem, the present invention provides a sterilization lighting device.

A sterilization lighting device according to an embodiment of the present invention is a plate-shaped sterilization lighting device forming a first plane, comprising: first LEDs arranged along a periphery of a sidewall of the first plane; a light guide plate disposed behind the first LED to correspond to the first plane and having a plurality of light guide patterns capable of changing a path of the first light emitted from the first LED; and a second LED provided on the rear surface of the light guide plate to correspond to the first plane and intersected with the light guide pattern to emit a second light forward.

According to one embodiment, the first LED and the second LED may further include a controller capable of adjusting the on/off (ON/OFF) and the amount of light.

According to an embodiment, the second light may have a wavelength of 400 to 430 nm.

According to an embodiment, the second light may have a center wavelength of 405 nm.

According to an embodiment, the second LED is provided on one surface of the substrate, and may further include a reflective layer provided on the substrate in parallel with the second LED.

According to an embodiment, the light guide plate may be made of at least one of glass, acrylic, polycarbonate, and polystyrene.

According to an embodiment of the present invention, the first LED with high luminance is arranged around the first planar sidewall to minimize glare caused by light bleed, but the second LED with relatively low luminance with less light bleed is disposed on the first plane There is an advantage in that the sterilization effect of the illuminated area can be maximized while minimizing eye fatigue as the paths of the first light and the second light are different.

According to an embodiment of the present invention, a uniform sterilization effect is achieved by arranging the second LED on the first plane while reducing the thickness of the sterilization lighting device by arranging the first LED on the periphery of the first plane sidewall. There are advantages that can be provided on

According to another embodiment of the present invention, there is an advantage in that the first LED and the second LED selectively emit light in a compatible manner, so that the amount of light above a certain illuminance can be secured and the area to be illuminated can be made clean.

According to another embodiment of the present invention, it is possible to implement a thin sterilization lighting device with a thickness of less than a certain thickness by securing uniform illumination in the area to be illuminated only with the edge-type first LED and the light guide plate, thereby eliminating the need for a separate diffusion sheet. There is this.

According to another embodiment of the present invention, by selectively lighting the first LED and the second LED in the lighting mode, the sterilization mode, and the lighting-sterilization mixed mode by the controller, there is an advantage that a complex function can be implemented with one device. .

According to another embodiment of the present invention, since the light guide plate is made of a transparent glass or acrylic material, the second light emitted from the second LED is directly irradiated to the area to be illuminated, thereby having an effective sterilizing power.

According to another embodiment of the present invention, it is possible to provide a lighting function and a sterilization function with one sterilization lighting device, so that there is an advantage of high utilization.

1 is a view showing a sterilization lighting device according to an embodiment of the present invention.
FIG. 2 is a view showing a cross section AA′ of FIG. 1 .
3 is a view showing a sterilization lighting device according to an embodiment of the present invention.
4(a) to 4(d) are views showing a sterilization lighting device according to different embodiments of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the technical spirit of the present invention is not limited to the embodiments described herein and may be embodied in other forms. Rather, the embodiments introduced herein are provided so that the disclosed content may be thorough and complete, and the spirit of the present invention may be sufficiently conveyed to those skilled in the art.

In this specification, when a component is referred to as being on another component, it means that it may be directly formed on the other component or a third component may be interposed therebetween. In addition, in the drawings, the shape and size are exaggerated for effective description of technical content.

Also, in various embodiments of the present specification, terms such as first, second, third, etc. are used to describe various components, but these components should not be limited by these terms. These terms are only used to distinguish one component from another. Accordingly, what is referred to as a first component in one embodiment may be referred to as a second component in another embodiment. Each embodiment described and illustrated herein also includes a complementary embodiment thereof. In addition, in the present specification, 'and/or' is used to mean including at least one of the elements listed before and after.

In the specification, the singular expression includes the plural expression unless the context clearly dictates otherwise. In addition, terms such as "comprise" or "have" are intended to designate that a feature, number, step, element, or a combination thereof described in the specification is present, and one or more other features, numbers, steps, configuration It should not be construed as excluding the possibility of the presence or addition of elements or combinations thereof. Also, in the present specification, the term “connection” is used to include both indirectly connecting a plurality of components and directly connecting a plurality of components.

In addition, in the following description of the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted.

1 is a view showing a sterilization lighting device 10 according to an embodiment of the present invention, FIG. 2 is a view showing a cross section AA′ of FIG. 1 , and FIG. 3 is a sterilization lighting device according to an embodiment of the present invention. It is a view showing (10), and FIGS. 4(a) to 4(d) are views showing a sterilization lighting device 10 according to different embodiments of the present invention.

Hereinafter, each component constituting the sterilization lighting device 10 according to an embodiment of the present invention will be described in detail.

1 to 4 (d), the sterilization lighting device 10 according to an embodiment of the present invention emits and irradiates the first light to the area to be illuminated, but is harmless to the human body and has excellent sterilization effect in the visible light area It is a lighting device capable of emitting a large second light. The sterilization lighting device 10 includes a first LED 100 , a light guide plate 200 , and a second LED 300 , and may further include a controller 400 .

As shown in FIGS. 4A to 4D , the sterilization lighting device 10 may be a first planar plate-shaped lighting device. The sterilization lighting device 10 may form a first plane having a circular or oval, square, or rectangular cross-sectional shape with a predetermined thickness.

Referring back to FIGS. 1 to 3 , the first LED 100 may be used as lighting to illuminate a specific space. The first LED 100 may be used as an edge-type lighting device. A plurality of first LEDs 100 may be arranged on a substrate. The substrate may be provided to form a sidewall along the circumference of the first plane. The substrate may be a PCB capable of supporting the first LED 100 and supplying power to the first LED 100 . According to an embodiment, the substrate may be provided along a side surface of the first plane. Although the first LED 100 is provided on the substrate, it is possible to secure the amount of light above a certain level by providing a plurality to function as the main name.

Referring back to FIGS. 1 to 3 , the light guide plate 200 may be provided behind the first LED 100 . More specifically, the light guide plate 200 may be provided on the rear side of the first LED 100 to change the path of the first light emitted from the first LED 100 . The light guide plate 200 may be provided on an irradiation path of the first light emitted from the first LED 100 . The light guide plate 200 may be arranged to correspond to the first plane. The light guide plate 200 may include a plurality of light guide patterns 210 .

The light guide pattern 210 may change the path of the first light emitted from the first LED 100 toward the front to-be-illuminated area. The light guide pattern 210 may convert the optical path of the first light incident through different arbitrary paths to the direction of the illuminated area. The light guide pattern 210 may be arranged in a predetermined arrangement over the entire surface of the first plane so that the light emitted from the first LED 100 is irradiated to the entire area to be illuminated. The light guide pattern 210 may be formed and provided on the light guide plate 200 in relation to a specific pattern and an arbitrary arrangement in order to disperse and refract the first light emitted from the front of the first LED 100 . Referring back to FIG. 1 or FIG. 3 , the light guide pattern 210 according to an embodiment has a hemispherical shape and is arranged at regular intervals as an example, but is not limited thereto.

According to an embodiment, the light guide pattern 210 may be formed by printing to be mounted on the light guide plate 200 or an imprinting method such as laser processing in which the light guide plate 200 is etched to a predetermined depth.

The light guide plate 200 may be made of a transparent material. According to an embodiment, the light guide plate 200 may be made of at least one of glass, acrylic, polycarbonate, and polystyrene. The light guide plate 200 may transmit the first light and the second light to be irradiated onto the area to be illuminated.

Transparency of the light guide plate 200 may be selectively adjusted in the first LED lighting mode or the first LED off mode according to whether the first LED 100 is applied with current.

In the first LED lighting mode, when the first LED 100 emits light as a current is applied to the first LED 100 , the light guide pattern 210 is activated, and the light guide plate 200 scatters light to the area to be illuminated. It can function as a light.

In the first LED off mode, the light guide plate 200 may be transparent. When the supply of current to the first LED 200 is stopped in the second mode, there is no scattering of light by the light guide pattern 210 and the light guide plate 200 may be maintained in a transparent state.

Referring back to FIGS. 1 to 3 , the second LED 300 may be provided on the rear surface of the light guide plate 200 . A plurality of second LEDs 300 may be provided over the entire first plane. The second LED 300 may be provided to intersect with the light guide pattern 210 so as not to interfere with each other in the vertical direction. The second LED 300 may be a direct lighting device. The second LED may emit the second light to the front to-be-illuminated area by a direct illumination method.

The sterilization function of the second light may not be inhibited because a decrease in luminance of the second light due to the diffusion material or the light guide pattern 210 on the second light path of the second LED 300 or interference with the light path does not occur.

The second LED 300 may be provided on one surface of the substrate. The substrate may be a PCB capable of supporting the second LED 300 and supplying power to the second LED 300 . According to an embodiment, the substrate may have a first plane. The second LED 300 may be arranged in a predetermined arrangement so that a uniform sterilization function can be expressed in the area to be illuminated. The second LED 300 may be provided on a substrate disposed to face the area to be illuminated because the luminance is relatively low compared to the first LED 100 and light bleed does not occur.

Referring back to FIG. 2 , the second LEDs 300 may be arranged to cross each other so as to be spaced apart from the light guide pattern 210 in the vertical direction. That is, the second light emitted from the front toward the illuminated area is not interfered with by the light guide pattern 210 .

The reflective layer 310 may be provided in parallel with the second LED 300 on the substrate. The reflective layer 310 may be formed to be applied on the substrate while the second LED 300 is exposed. The reflective layer 310 may prevent the surface of the substrate from being exposed in the direction of the illuminated area, and may reflect light to be concentrated in the direction of the illuminated area.

In addition, the reflective layer 310 is made of a material having excellent heat dissipation performance and may function as a heat sink for discharging heat generated from the first LED 100 and the second LED 300 to the outside. The reflective layer 310 may be made of a material having excellent thermal conductivity.

According to an embodiment, the second light may be in a wavelength range of 400 to 430 nm among wavelengths of light in the visible light range. The second light may preferably be light of a near-ultraviolet wavelength of 405 nm. The second light reacts with the porphyrin in the bacteria to induce active oxygen, destroys cells and inactivates them, and further removes the source of odors. Bacteria according to an embodiment include staphylococci, CONS, streptococci, enterococci, and the like.

Referring back to FIG. 3 , the controller 400 can independently control ON/OFF of the first LED 100 and the second LED 300 . The controller 400 may independently control the amount of light of the first LED 100 and the second LED 300 . The controller 400 is, optionally, a lighting mode for driving the first LED 100 and a sterilization mode for driving the second LED 300, a lighting for driving the first LED 100 and the second LED 300 - It is possible to selectively drive and control the sterilization lighting device 10 in a sterilization mixing mode, a light-off mode in which both the first LED 100 and the second LED 300 are flickering.

Referring back to FIGS. 1 and 2 , the cover 500 may be provided in front of the first LED 100 and the second LED 200 . The cover 500 may be made of quartz. The cover 500 may not deteriorate the characteristics of light when the first light and the second light are transmitted to the illuminated area. More specifically, as the second light passes through the cover 500 , the second light of the second LED 300 may be transmitted to the area to be illuminated without a change in wavelength.

As mentioned above, although the present invention has been described in detail using preferred embodiments, the scope of the present invention is not limited to specific embodiments and should be interpreted by the appended claims. In addition, those skilled in the art should understand that many modifications and variations are possible without departing from the scope of the present invention.

10: sterilization lighting device
100: first LED
200: light guide plate 210: light guide pattern
300: second LED 310: reflective layer
400 : controller
500 : cover

Claims (7)

In the plate-shaped sterilization lighting device forming a first plane,
a first LED arranged along the periphery of the sidewall of the first plane;
The first LED is disposed at the rear of the first LED to correspond to the first plane, and transparency is selectively adjusted to a first LED lighting mode or a first LED off mode depending on whether a current is applied to the first LED, and the first a light guide plate having a plurality of light guide patterns to change the path of the first light emitted from the first LED in the LED lighting mode;
a second LED provided on a rear surface of the light guide plate to correspond to the first plane and intersected with the light guide pattern to emit a second light forward; and
It is provided in parallel with the second LED, is made of a material having excellent heat dissipation performance, and includes a reflective layer capable of reflecting the first light so that the first light is concentrated in a direction to be illuminated;
The sterilization lighting device, wherein the second LED has low luminance and does not cause light spreading, so that the sterilization power can be increased without reducing the luminance of the second light or interfering with the optical path due to the light guide pattern.
The method of claim 1,
The sterilization lighting device further comprising a controller capable of adjusting the on / off (ON / OFF) and the amount of light of the first LED and the second LED.
The method of claim 1,
and the second light has a wavelength of 400 to 430 nm.
4. The method of claim 3,
and the second light has a central wavelength of 405 nm.
The method of claim 1,
The second LED is provided on one surface of the substrate, the sterilization lighting device further comprising a reflective layer provided on the substrate in parallel with the second LED.
The method of claim 1,
The light guide plate is made of at least one of glass, acrylic, polycarbonate, and polystyrene, a sterilization lighting device.
The method of claim 1,
The sterilization lighting device further comprising a cover made of quartz provided in front of the first LED and the second LED to transmit the first light and the second light to the area to be illuminated.

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