KR20220056595A - Lighting device using light emitting diode - Google Patents

Abstract

The present invention relates to a lighting device using an LED, wherein the lighting device is provided with a phosphorescent layer including a specific phosphorescent pigment and fragrance on the surface of a light source unit or a lighting cover, thereby maximizing the design effect of a lighting device while maximizing a color therapy or light therapy Such emotional functions can be implemented, and there is an advantage that oil derived from nature can have a long-term aroma effect depending on the temperature.

Description

Lighting device using LED {LIGHTING DEVICE USING LIGHT EMITTING DIODE}

The present invention relates to a lighting device using an LED.

After industrialization, as the main activity space of human beings changed from outdoor to indoor, lighting occupies a large part of our lives. In general, incandescent bulbs or fluorescent lamps are still widely used as lamps for lighting equipment to illuminate indoor spaces, but in recent years, three-wavelength bulbs that are brighter and have a longer lifespan than fluorescent lamps and can reduce eye fatigue are also widely available. there is.

Such lighting devices include a light source such as a fluorescent lamp or a light bulb emitting light and a cover surrounding the light source. The cover is attached to have a beautiful appearance while hiding the light source and allowing light to propagate in the form of transmitted light. These lighting fixtures have been identified only as functional elements that light up darkness and decorative elements of interiors and exteriors.

However, among the studies on emotional lighting up to now, research for substituting human emotions or situations is at an incomplete level. There is a limit as it deals only with the control of lighting through sub-information.

In addition, in recent years, as people's interest in "well-being" increases, this concept is being introduced to houses. However, the results are insignificant.

Republic of Korea Registration Publication No. 10-1978486 Republic of Korea Registered Utility Model No. 20-0469398

Accordingly, it is an object of the present invention to provide a multifunctional lighting device capable of implementing emotional functions such as color therapy or light therapy while maximizing the design effect of the lighting device.

As a means for solving the above problems,

The present invention is one embodiment,

a light source including a package body and an LED chip mounted on the package body; and

It includes a lighting cover disposed on the light source unit,

Any one or more of the package body and the lighting cover of the light source unit provides a lighting device, characterized in that the light-emitting layer is printed.

Here, the photoluminescent layer may be printed to surround the side surface of the LED chip mounted on the package body, and may be printed on the inner surface of the lighting cover in some cases.

In addition, the photoluminescent layer may be formed using a composition including a photoluminescent pigment, a fragrance, and a binder.

In this case, the photoluminescent pigment includes at least one metal compound selected from the group consisting of ZnSCu, ZnSCl, Al ₂ O ₃ MgO, Al ₂ O ₃ CaOS ₄ OB ₂ O ₃ , CaAl ₂ O ₄ and Y ₂ O ₂ S can do.

In addition, among the photoluminescent pigments, Al ₂ O ₃ MgO, Al ₂ O ₃ CaOS ₄ OB ₂ O ₃ , CaAl ₂ O ₄ and Y ₂ O ₂ S are scandium (Sc), yttrium (Y) and lanthanum (La), Cerium (Ce), Praseodymium (Pr), Neodymium (Nd), Promethium (Pm), Samarium (Sm), Europium (Eu), Gadolinium (Gd), Terbium (Tb), Dysprosium (Dy), Holmium One or more rare earth elements selected from the group consisting of (Ho), erbium (Er), thulium (Tm), ytterbium (Yb), and rethetium (Lu) may be doped.

In addition, the photoluminescent pigment may have a form coated with a silane compound.

In addition, it may be a natural oil that volatilizes at a temperature of 40° C. or higher in response to the temperature, and is selected from the group consisting of tangerine, orange, mandarin, tangerine, bergamot, jasmine, rose, chamomile, peppermint, thyme, lavender and rosemary. It may be derived from more than one species of raw material.

In addition, the binder is polymethyl methacrylate resin (polymethylmethacrylate, PMMA), phenol (PF) resin, ABS resin, PVC resin, polycarbonate (PC) resin, polyethylene (PF) resin, polystyrene (PS) resin , it may include at least one selected from the group consisting of a polyurethane (polyurethane, PU) resin and a polyethylene terephthalate (PET) resin.

Furthermore, the composition may further include a Zion ink that is sensitive to a temperature greater than 40°C.

The lighting device according to the present invention is provided with a photoluminescent layer on the surface of the light source unit or the lighting cover to maximize the design effect of the lighting device and realize emotional functions such as color therapy or light therapy, and the photoluminescence implemented according to the temperature It has the advantage of changing the color of the layer and at the same time being able to direct the oil derived from nature for a long time.

The above effects and additional effects will be described in detail below.

1 is a cross-sectional view showing a cross-sectional structure of a lighting device according to the present invention:
(a) When the lighting cover has a structure spaced apart from the light source part at regular intervals and the luminescent layer is printed on the package body,
(b) when the lighting cover has a structure spaced apart from the light source by a predetermined interval, but the luminescent layer is printed on the lighting cover, and
(c) When the lighting cover has a structure that covers the light source part, but the luminescent layer is printed on the lighting cover.
2 is a cross-sectional view illustrating a cross-sectional structure of a package body on which a photoluminescent layer is printed.
3 is an image illustrating a surface structure of a package body on which a photoluminescent layer is printed.
4 is an image showing the surface structure of the lighting cover printed with a luminescent layer.

Prior to describing the present invention in detail below, it is to be understood that the terminology used herein is for the purpose of describing specific embodiments and is not intended to limit the scope of the present invention, which is limited only by the appended claims. shall. All technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the art, unless otherwise stated.

In the present invention, the use of “or” or “and” means “and/or” unless otherwise indicated. Moreover, the use of the term “accompanying” as well as other forms such as “accompanying” and “accompanying” is not limiting. Section headings used in the present invention are for organizational purposes only and should not be construed as limiting the subject matter described.

Throughout this specification and claims, unless stated otherwise, the term comprise, comprises, comprising is meant to include the stated object, step or group of objects, and steps, and any other object. , steps, or groups of objects or groups of steps are not used in the sense of exclusion.

Hereinafter, the present invention will be described in more detail.

lighting device

The present invention in one embodiment,

a light source unit including a package body and an LED chip mounted on the package body; and

It includes a lighting cover disposed on the light source unit,

Any one or more of the package body and the lighting cover of the light source unit provides a lighting device, characterized in that the light-emitting layer is printed.

1 is a cross-sectional view showing a cross-sectional structure of a lighting device 100 according to the present invention. As shown in FIG. 1 , the lighting device 100 includes a light source unit including an LED chip 112 mounted on a package body 111 . Including a lighting cover 120 disposed on the 110 and the light source unit 110, the light emitting layers 131 and 132 on any one or more of the package body 111 and the lighting cover 120 of the light source unit 110. ) may be printed.

Specifically, the light source unit 110 includes a package body 111 , and an LED chip 112 is mounted on the surface of the package body 111 to emit light, and a predetermined distance from the light source unit 110 . It includes a lighting cover 120 having a plate shape (FIG. 1 (a) or (b)) disposed spaced apart from each other, or having a cover shape (FIG. 1 (c)) covering the entire surface of the light source unit 110 .

In this case, the package body 111 and the LED chip 112 constituting the light source unit 110 may have a configuration commonly used in the art, and the LED chip 112 may have a pattern and/or print implemented when quenching. In consideration of the shape, it may be mounted on the package body 111 in various forms.

In addition, a photoluminescent layer 131 may be printed on the surface of the package body 111 of the light source unit 110 . In this case, as shown in FIG. 2 , the photoluminescent layer 131 surrounds the side surface of the LED chip 112 and is not printed on the surface of the LED chip 112 , specifically, the package body in the LED chip 112 . It may have a structure in which the photoluminescent layer 131 is not formed on a plane parallel to (111).

In general, luminescence refers to accumulating light for a while and then emitting the accumulated light energy in a dark dark state. The luminescent layer 131 is a layer using this luminescent property, and the LED chip mounted on the package body 111 ( 112) accumulates the emitted light when it emits light, and performs a function of emitting the accumulated light energy when it is in a dark state. Here, the photoluminescent layer 131 is not printed on the surface (or upper surface) of the LED chip 112 , but is printed to surround the side surface, so the light quantity and luminance of the LED chip 112 when the lighting device 100 is used Effective photoluminescence effect can be realized after use while minimizing loss.

In addition, when the photoluminescent layer 131 is printed to surround the side surface of the LED chip 112 as described above, a pattern or design is implemented according to the shape of the LED chip 112 after the lighting device 100 is used, or the LED chip ( A pattern or design may be implemented according to the shape of the photoluminescent layer 131 printed together with the shape of the 112). Specifically, as shown in FIG. 3, the photoluminescent layer 131 is (a) printed in a structure surrounding only the side surface of the LED chip 112, or (b) the package body except for the upper surface of the LED chip 112 ( 111) may have a printed form on the entire surface. In addition, (c) may have a form in which a specific pattern or design is printed on the remaining surface of the package body 111 while surrounding the side surface of the LED chip 112 .

In the present invention, as described above, by adjusting the shape of the photoluminescent layer 131 printed on the package body 111 as described above, the light quantity and luminance loss of the LED chip 112 when the lighting device 100 emits light is minimized, and the light is extinguished. Since various designs can be expressed with the condensed light, emotional functions can be realized and the amount of condensed light can be controlled at the same time.

In addition, the photoluminescent layer 132 may be printed on the inner surface of the lighting cover (120). 4 shows the inner and outer surfaces of the lighting cover 120 when the LED chip 112 emits light. When the LED chip 112 emits light, the light transmittance of the portion on which the phosphor layer 132 is printed is lowered, so the phosphor layer 132 is implemented according to various patterns or designs depending on the printed form, and the Due to the light emission of the light-emitting layer 132 during extinction, the light-emitting layer 132 may be implemented according to various patterns or designs depending on the printed form.

Furthermore, the photoluminescent layers 131 and 132 may be printed on the inner surface of the package body 111 and the lighting cover 120 at the same time, but in this case, the amount of light and the luminance of the LED chip 112 may be reduced, so the package body The area of the photoluminescent layer 131 printed on (111) may be the same or wider than the area of the photoluminescent layer 132 printed on the lighting cover 120, preferably 1.5 times or more.

Meanwhile, the photoluminescent layers 131 and 132 may be formed using a composition including a photoluminescent pigment, a fragrance, and a binder.

Here, the photoluminescent pigment includes at least one metal compound selected from the group consisting of ZnSCu, ZnSCl, Al ₂ O ₃ MgO, Al ₂ O ₃ CaOS ₄ OB ₂ O ₃ , CaAl ₂ O ₄ and Y ₂ O ₂ S can do. Specifically, the photoluminescent pigment may be Al ₂ O ₃ MgO, Al ₂ O ₃ CaOS ₄ OB ₂ O ₃ , CaAl ₂ O ₄ or Y ₂ O ₂ S. The present invention can implement high afterglow luminance, afterglow time and light resistance by including the phosphorescent pigment as described above, and at the same time can emit far-infrared rays and negative ions beneficial to the human body. In particular, when Al ₂ O ₃ MgO, Al ₂ O ₃ CaOS ₄ OB ₂ O ₃ , CaAl ₂ O ₄ or Y ₂ O ₂ S is used as a photoluminescent pigment, compared to zinc sulfide (eg, ZnSCu, ZnSCl, etc.) The afterglow time recognizable in the dark room is increased to 20 hours or more, and the stability to temperature is excellent, so that visible light can be stably fluoresced when the LED chip 112 emits light.

In addition, among the photoluminescent pigments, Al ₂ O ₃ MgO, Al ₂ O ₃ CaOS ₄ OB ₂ O ₃ , CaAl ₂ O ₄ and Y ₂ O ₂ S are scandium (Sc), yttrium (Y) and lanthanum (La), Cerium (Ce), Praseodymium (Pr), Neodymium (Nd), Promethium (Pm), Samarium (Sm), Europium (Eu), Gadolinium (Gd), Terbium (Tb), Dysprosium (Dy), Holmium At least one rare earth element selected from the group consisting of (Ho), erbium (Er), thulium (Tm), ytterbium (Yb), and rethetium (Lu) may be doped. The phosphorescent pigment can obtain a higher phosphorescence effect by having a configuration doped with a rare earth element.

Furthermore, the photoluminescent pigment may be coated with a silane compound. Such a luminescent pigment can be obtained by dipping a powdery pigment in a silane compound and then drying the silane compound. product), epoxy silane (Z-6040 SILANE manufactured by Dow Corning), methacrylic silane (Z-6030 SILANE manufactured by Dow Corning), alkylsilane (Z-6582 SILANE manufactured by Dow Corning), phenylsilane (Z-6030 SILANE manufactured by Dow Corning) One or more selected from -5314 SILANE products) can be used. As an example, the photoluminescent pigment is a SrAl ₂ O ₄ doped SrAl ₂ O ₄ (average particle size: 3 to 150 μm) pigment (average particle size: 3 to 150 μm) immersed in methacrylsilane. By doing so, it can have a form in which a methacryl silane (average thickness: 0.05 to 1 μm) layer is formed on the surface.

The present invention can further improve the thermal stability of the photoluminescent pigment by forming a layer coated with the compound on the surface of the photoluminescent pigment as described above, thereby preventing the loss of photoluminescence efficiency due to the light emission of the LED chip. .

In addition, the photoluminescent pigment may be included in an amount of 5 to 30 parts by weight based on 100 parts by weight of the total composition constituting the photoluminescent layer, specifically 5 to 20 parts by weight; Or 8 to 12 parts by weight may be included. When the photoluminescent pigment is used in less than 5 parts by weight, the photoluminescent effect is reduced, and when used in excess of 30 parts by weight, there is a limit to lowering the optical transparency.

In general, lighting equipment becomes dark as the light disappears when the power is cut off. When the lighting equipment is turned off at night to sleep, etc., it takes time for the eyes who have been accustomed to a bright place to get used to a dark place. The movement is not smooth, so it may collide with furniture, etc. However, according to the present invention, the above-described phosphorescent pigment exhibits excellent phosphorescence performance such as afterglow luminance, afterglow time, and light resistance. In addition, in case of an emergency, it can function as an emergency light regardless of a power outage. In addition, it emits far-infrared rays and negative ions, and provides deodorizing and antibacterial effects to keep the indoor environment comfortable.

In addition, the fragrance included in the composition may be one that smells in response to temperature. Specifically, the perfume may include natural oil that volatilizes at a temperature of 40° C. or higher in response to temperature.

In the lighting device 100 of the present invention, when the LED chip 112 of the light source unit 110 emits light, the temperature of the package body 111 and the lighting cover 120 of the light source unit 110 is 40° C. or higher, specifically 45 ℃ or higher, more specifically 50 ℃ or higher, the natural oil is not emitted before the light emission of the LED chip 112, the package body 111 and / or lighting by the light emission of the LED chip 112 When the temperature of the cover 120 is raised to 30° C. or higher, the scent is emitted by this, so there is an advantage that it can be used softly for a long time compared to a general perfume.

These natural oils are tangerine, orange, mandarin, tangerine, bergamot, jasmine, rose, chemomile, peppermint, thyme, lavender and rosemary at least one raw material selected from the group consisting of natural essential oil extracted at 30 ~ 80 ℃. may include As an example, bergamot essential oil, jasmine essential oil, rosemary essential oil, and thyme essential oil extracted at 40 to 60° C. may be mixed in equal amounts (by weight), respectively.

In addition, the content of the perfume may be included in an amount of 10 to 50 parts by weight based on 100 parts by weight of the total composition, specifically, 10 to 30 parts by weight; Or 10 to 20 parts by weight may be included. Since the fragrance uses natural essential oil, effects such as aromatherapy can be realized, but compared to the case of using artificially manufactured oil, the fragrance has a low limit, so when used in less than 10 parts by weight, the fragrance effect of the fragrance is sufficiently It can be difficult to implement. In addition, when the amount of fragrance is used in excess of 50 parts by weight, although the fragrance is excellent, there is a limitation in that economic efficiency is lowered.

In addition, the binder used in the composition is polymethyl methacrylate resin (polymethylmethacrylate, PMMA), phenol (PF) resin, ABS resin, PVC resin, polycarbonate (PC) resin, polyethylene (PF) resin, polystyrene ( PS) resin, polyurethane (polyurethane, PU) resin, and polyethylene terephthalate (PET) may include at least one selected from the group consisting of resin, specifically polymethyl methacrylate resin (PMMA) or phenol resin may include The above resins are hard and optically transparent due to their high hardness, so they can be used as lighting cover materials for lighting devices. In the case of phenolic resin, since it has electrical insulation, the stability of the lighting device can be improved when used as a cover.

In addition, the content of the binder may be 40 to 80 parts by weight based on 100 parts by weight of the total composition, specifically, 40 to 70 parts by weight; or 40 to 60 parts by weight. When the content of the binder is less than 40 parts by weight, the adhesion of the photoluminescent layer is lowered and there is a problem that durability is deteriorated. There are limits.

Furthermore, the composition may further include a Zion ink that is sensitive to a temperature greater than 40°C. The Zion ink is an ink that changes color according to a change in temperature, and in the present invention, it may mean an ink in which a color is expressed at a temperature exceeding 40°C. Specifically, the Zion ink may be one in which colors are expressed at a temperature exceeding 40°C by mixing two or more types of inks that express colors at a temperature of 30°C or higher.

As an example, the Zion ink is Zion ink that changes color at 30 ~ 39 ℃; Zion ink which changes color at 51~59℃; and Zion ink, which changes color at 60 to 69 ° C., is mixed to change color primarily at 45.5 to 49 ° C., and secondarily change color at 55.5 to 64 ° C.

In the present invention, by mixing and using two or more kinds of Zion inks as described above, the color implemented in the photoluminescent layer can be changed according to temperature conditions, so that monotonous designs can be diversified, thereby maximizing the design effect of the lighting device. .

In addition, the content of the Zion ink may be 5 to 20 parts by weight based on 100 parts by weight of the total composition, specifically, 5 to 15 parts by weight; or 8 to 12 parts by weight. In the present invention, by controlling the content of Zion ink within the above range, the color expression of Zion ink is insignificant due to a small content, or color is overexpressed due to an excess of Zion ink, thereby preventing reduction in the photoluminescence effect.

Claims (10)

a light source including a package body and an LED chip mounted on the package body; and
It includes a lighting cover disposed on the light source unit,
At least one of the package body and the lighting cover of the light source unit is a lighting device, characterized in that the phosphor layer is printed.
The method of claim 1,
The light emitting layer is printed so as to surround the side surface of the LED chip mounted on the package body.
According to claim 1,
The lighting device, characterized in that the phosphor layer is printed on the inner surface of the lighting cover.
The method of claim 1,
The luminescent layer is a lighting device formed by using a composition including a luminescent pigment, a fragrance, and a binder.
5. The method of claim 4,
The phosphorescent pigment is a lighting device comprising at least one metal compound selected from the group consisting of ZnSCu, ZnSCl, Al ₂ O ₃ MgO, Al ₂ O ₃ CaOS ₄ OB ₂ O ₃ , CaAl ₂ O ₄ and Y ₂ O ₂ S .
6. The method of claim 5,
A lighting device, characterized in that the metal compound is coated with a silane compound.
5. The method of claim 4,
The fragrance is a lighting device comprising a natural oil that volatilizes at a temperature of 40 ℃ or higher in response to temperature.
8. The method of claim 7,
The natural oil is a lighting device derived from at least one raw material selected from the group consisting of tangerine, orange, mandarin, tangerine, bergamot, jasmine, rose, chemomile, peppermint, thyme, lavender and rosemary.
5. The method of claim 4,
The binder is polymethyl methacrylate (PMMA), phenol (PF) resin, ABS resin, PVC resin, polycarbonate (PC) resin, polyethylene (PF) resin, polystyrene (PS) resin, polyurethane ( A lighting device comprising at least one selected from the group consisting of polyurethane, PU) resin and polyethylene terephthalate (PET) resin.
5. The method of claim 4,
wherein the composition further comprises a Zion ink that is sensitive to a temperature greater than 40°C.

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