KR101767510B1

KR101767510B1 - Lighting device

Info

Publication number: KR101767510B1
Application number: KR1020150167690A
Authority: KR
Inventors: 정호열; 박창현; 이현태; 박웅규; 박종원; 이중희
Original assignee: 영남대학교 산학협력단
Priority date: 2015-11-27
Filing date: 2015-11-27
Publication date: 2017-08-11
Also published as: KR20170062188A

Abstract

A lighting device is disclosed. The illumination device according to the exemplary embodiment includes a first illumination unit including a first illumination unit, the first illumination unit including a first air flow passage provided inside the illumination device and through which external air flows, And a heat dissipating part for dissipating heat to the flow path side, and a heat dissipating part for dissipating the heat of the heat exchanged air, the heat exchanging air being communicated with the first air flow path and the other end communicating with the outside, 2 air flow path.

Description

LIGHTING DEVICE

Embodiments of the invention relate to lighting technology.

Lighting is used to illuminate the interior of the room. In the past, incandescent lamps or fluorescent lamps were used as lighting devices. Recently, however, the use of light emitting diodes (LEDs) having a semi-permanent life time and low power consumption has been increasing rapidly. On the other hand, an air purification device is installed in the room to cope with air pollution caused by fine dust or the like. However, it is costly to install the air purifying device indoors separately, which reduces the efficiency of the indoor space.

Korean Patent Publication No. 10-2013-0043776 (Feb.

An embodiment of the present invention is to provide a lighting device capable of purifying indoor air while reducing power consumption.

The illumination device according to the exemplary embodiment includes a first illumination unit including a first illumination unit, a first air flow passage provided inside the illumination unit, through which external air flows, A heat dissipating unit for dissipating heat generated in the first illumination unit toward the first air passage; And a second air passage in which one side of the illumination device communicates with the first air passage and the other side communicates with the outside, and the heat exchanged air of the first air passage is moved by heat convection to be discharged to the outside .

The second air passage may be formed along the opposite direction of gravity inside the illumination device.

The illumination device may further include: a second illumination unit formed in the second air flow path and configured to emit ultraviolet rays; And a photocatalyst member formed to be exposed to the second air flow path and to generate an air purifying material in response to the ultraviolet light.

The illumination device may further include an ultraviolet filter member formed outside the photocatalyst member and blocking the ultraviolet light.

The illumination device may adjust the number of light sources driven by the first illumination part according to the air pollution degree around the illumination device.

The second illuminating unit may be driven when the illuminance value around the illuminating apparatus is equal to or less than a predetermined illuminance value.

The illumination device may further include an ultraviolet phosphor formed outside the photocatalyst member and absorbing the ultraviolet light to generate a visible light.

The illumination device may further include: a guide part formed along the second air flow path and including the photocatalyst member; And a lid part spaced apart from the end of the guide part to provide a path through which the heat exchanged air is discharged and to prevent the ultraviolet rays from escaping to the outside.

Wherein the first air flow path is provided along a horizontal direction inside the illumination device and the second air flow path is perpendicular to the first air flow path and along the opposite direction of gravity inside the illumination device And the communicating portion of the first air passage and the second air passage may be inclined.

The illumination device includes a housing part; And a plurality of air holes provided along an upper edge of the housing part and through which external air flows, and a rim supporting part communicating with the first air flow path, wherein the first air flow path is formed in the upper part of the housing part To the other side of the lighting device.

An illumination apparatus according to another exemplary embodiment includes a first illumination unit including at least one white light source; A first heat dissipation unit for dissipating heat generated in the first illumination unit; A first air passage in which outside air is introduced and in which the introduced outside air is brought into contact with the first heat dissipating unit and heat-exchanged by the first heat dissipating unit; A second air passage formed along the opposite direction of the gravity so that the heat exchanged air of the first air passage is moved by heat convection and is discharged to the outside, ; And a photocatalyst member that is exposed to the second air flow path and reacts with ultraviolet rays to generate an air purifying material.

The lighting apparatus may adjust the number of white light sources driven by the first illumination unit according to the degree of air pollution around the lighting apparatus.

According to the embodiment of the present invention, the surrounding air is naturally circulated through the heat convection phenomenon using heat generated while the first illumination unit is driven, so that air can be circulated without a separate fan, Thereby reducing power consumption while reducing manufacturing costs.

In addition, when sunlight shines as in the daytime, when the outside air passes through the second air passage, the photocatalyst member formed on the inner wall of the guide unit reacts with the ultraviolet rays included in the sunlight to generate air purifying material. Then, the air purifying material moves along the second air flow path and is discharged to the outside through the discharge port, thereby purifying the air around the lighting device. In the nighttime, the second illumination unit may be driven to emit ultraviolet rays, and the photocatalytic member may generate an air purification substance in response to ultraviolet rays emitted from the second illumination unit. Thus, indoor air can be purified through the air purifying material in both daytime and nighttime.

Further, by controlling the number of the first light sources driven by the first illuminating unit according to the degree of pollution of the surrounding air, it is possible to simultaneously drive a large number of first light sources as the pollution degree of the air around the illuminating apparatus increases, It can be done quickly.

1 is a cross-sectional view of a lighting device according to an exemplary embodiment;
2 is a cross-sectional view of a lighting device according to another exemplary embodiment;

Hereinafter, specific embodiments of the present invention will be described with reference to the drawings. The following detailed description is provided to provide a comprehensive understanding of the methods, apparatus, and / or systems described herein. However, this is merely an example and the present invention is not limited thereto.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail. The following terms are defined in consideration of the functions of the present invention, and may be changed according to the intention or custom of the user, the operator, and the like. Therefore, the definition should be based on the contents throughout this specification. The terms used in the detailed description are intended only to describe embodiments of the invention and should in no way be limiting. Unless specifically stated otherwise, the singular form of a term includes plural forms of meaning. In this description, the expressions "comprising" or "comprising" are intended to indicate certain features, numbers, steps, operations, elements, parts or combinations thereof, Should not be construed to preclude the presence or possibility of other features, numbers, steps, operations, elements, portions or combinations thereof.

Also, the terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms may be used for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component.

Also, directional terms such as "one side "," other side ","upper"," lower ", and the like are used in connection with the orientation of the disclosed figures. Since the elements of the embodiments of the present invention can be positioned in various orientations, directional terms are used for illustrative purposes and not limitation.

1 is a cross-sectional view of a lighting apparatus according to an exemplary embodiment.

1, the lighting apparatus 100 includes a housing part 102, a first heat radiating part 104, a first lighting part 106, a second heat radiating part 108, a second lighting part 110, A diffusion portion 112, a diffusion portion 114, and a cover portion 116. [ In an exemplary embodiment, the illumination device 100 may be used as placed on a paper surface F. [ Here, the paper surface F may mean the bottom surface of a room, a tabletop, or a top surface of a desk. That is, the illumination device 100 may be arranged such that the illumination direction is the opposite direction of gravity.

The housing part 102 serves to structurally support the illumination device 100. [ The housing part 102 may be disposed on the paper surface F. [ A power supply circuit for supplying power to the illumination device 100 and a control circuit for controlling the illumination device 100 may be mounted inside the housing part 102. [

A first air passage 121 communicating with the outside may be provided in the housing part 102. The first air passage 121 may be provided at the upper end of the housing part 102. The first air passage 121 may be a passage that opens from one side to the other side of the housing part 102. The first air flow paths 121 may be spaced apart from each other along the outer circumferential surface of the housing part 102. External air can be introduced into the interior of the lighting apparatus 100 through the first air passage 121. Here, the first air passage 121 may be a passage for allowing the air introduced from the outside to move in the horizontal direction (i.e., the direction parallel to the paper) inside the illumination device 100.

The first heat-radiating portion 104 may be provided on the upper portion of the first air passage 121. The first heat dissipation unit 104 may be disposed along the first air flow path 121 at an upper portion of the first air flow path 121 in the illumination device 100. Here, the first air passage 121 may be provided between the first heat dissipation unit 104 and the housing unit 102. Although not shown, at least one support part may be formed between the first heat dissipation part 104 and the housing part 102. [ The first heat dissipation unit 104 is exposed to the first air flow path 121. The first heat radiating part 104 serves to dissipate heat generated in the first lighting part 106. The first heat dissipation unit 104 may be made of a material having excellent thermal conductivity (for example, aluminum, stainless steel, etc.). The first heat radiating part 104 discharges the heat generated in the first lighting part 106 toward the first air flow path 121.

The first illumination unit 106 may be formed on the first heat dissipation unit 104. The first illumination unit 106 may be formed along the first heat dissipation unit 104 on the first heat dissipation unit 104. The first illumination unit 106 may include a first substrate 106a and a first light source 106b. The first substrate 106a may be formed on the heat dissipation unit 104. [ The first substrate 106a may be formed in contact with the upper surface of the first heat- A metal PCB (Printed Circuit Board) may be used to increase heat dissipation efficiency of the first substrate 106a. In this case, the heat conduction loss between the first substrate 106a and the first heat dissipation unit 104 can be reduced, and the heat dissipation efficiency of the first heat dissipation unit 104 can be increased. However, the present invention is not limited thereto, and a general PCB (Printed Circuit Board) may be used. At least one first light source 106b may be provided on the first substrate 106a. The first light source 106b may be a white light source. As the first light source 106b, a white LED (Light Emitting Diode) may be used. The first illumination unit 106 can be used for illuminating the surroundings.

Meanwhile, a second air passage 123 may be formed in the interior of the illumination device 100 to discharge the air introduced through the first air passage 121 back to the outside. The second air passage (123) is formed in communication with the first air passage (121). The second air passage 123 may communicate with the first air passage 121 in a direction perpendicular to the first air passage 121. That is, the second air passage 123 moves in the vertical direction (that is, in the direction perpendicular to the paper surface or in the direction opposite to the gravity) inside the lighting apparatus 100 with the external air passing through the first air passage 121, As shown in FIG. The second air passage 123 may be provided at the center of the illumination device 100, but is not limited thereto.

The second heat-radiating portion 108 may be provided in the second air passage 123. The second heat-radiating portion 108 may be provided at the lower end of the second air passage 123. The second radiation part 108 serves to dissipate heat generated in the second illumination part 110. The second heat-radiating portion 108 may be made of a material having excellent thermal conductivity (for example, aluminum, stainless steel, etc.). The second radiation part 108 radiates the heat generated in the second illumination part 110 toward the second air flow path 123.

The second illumination unit 110 may be formed on the second radiation unit 108. The second illumination unit 110 may include a second substrate 110a and a second light source 110b. The second substrate 110a may be formed on the second heat dissipation unit 108. The second substrate 110a may be formed in contact with the upper surface of the second heat dissipation unit 108. [ The second substrate 110a may be formed of a metal PCB or a PCB. At least one second light source 110b may be provided on the second substrate 110a. The second light source 110b may be a light source that emits ultraviolet rays. As the second light source 110b, a UV (Ultra Violet) LED may be used. The second light source 110b may be used to activate the photocatalyst material formed on the guide portion 112. [

The guide portion 112 is a portion forming the outer wall of the second air passage 123. The guide portion 112 is formed along the second air passage 123. That is, the guide portion 112 may be formed vertically in the interior of the illumination device 100. The guide portion 112 may include a photocatalytic member 131, an ultraviolet filter member 133, and a reflective member 135. The photocatalytic member 131, the ultraviolet filter member 133, and the reflective member 135 may be stacked in this order from the inside to the outside of the guide portion 112. [

The photocatalytic member 131 may be formed on the inner wall of the guide portion 112. That is, the photocatalytic member 131 may be exposed to the second air passage 123. The photocatalytic member 131 may be provided to generate an air cleaning substance in response to ultraviolet rays. That is, the photocatalytic member 131 can generate an air purifying substance in response to ultraviolet rays irradiated by the second illumination unit 110 or ultraviolet rays included in natural light. The photocatalytic member 131 may include at least one photocatalyst material, for example, titanium dioxide, zinc oxide, cadmium sulfide, and tungsten oxide, but the photocatalytic material is not limited thereto. When ultraviolet rays are irradiated on the photocatalytic member 131, the photocatalytic member 131 generates a germicidal substance such as a hydroxyl radical and a superoxide having strong oxidizing power. These hydroxy radicals and superoxide oxidize and decompose pollutants in the indoor air.

The ultraviolet filter member 133 may be provided outside the photocatalyst member 131. The ultraviolet filter member 133 serves to prevent ultraviolet rays irradiated by the second illumination unit 110 from being emitted to the outside of the illumination device 100. That is, the ultraviolet rays irradiated by the second illumination unit 110 may have harmful effects on the human body, so that ultraviolet rays are prevented from flowing out to the outside through the ultraviolet filter member 133.

The reflecting member 135 may be provided outside the ultraviolet filter member 133. That is, the ultraviolet filter member 133 may be provided between the photocatalytic member 131 and the reflective member 135. The reflective member 135 serves to reflect white light emitted from the first illumination unit 106.

The diffusion portion 114 may be provided to cover the first illumination portion 106 at an upper portion of the housing portion 102. The diffusion unit 114 diffuses the white light emitted from the first illumination unit 106 to the outside. The diffusion portion 114 may be formed in the form of a dome at an upper portion of the first illumination portion 106. The diffuser 114 is fixed at one end to the first illumination unit 106 and vertically at the end of the first illumination unit 106 so that the guide unit 112 is positioned at a position corresponding to the height of the guide unit 112. [ And the other end portion can be fixed to the guide portion 112. [0054] However, the shape of the diffusion portion 114 is not limited thereto. The lid part receiving groove 114a may be formed at the other end of the diffusion part 114 so that the end of the lid part 116 is accommodated. The lid part receiving groove 114a may be provided at a lower height than the upper end of the guide part 112.

The lid portion 116 may be provided on the upper portion of the guide portion 112. The lid portion 116 may be made of an ultraviolet shielding material. That is, the lid part 116 may be made of a material capable of blocking ultraviolet rays so that ultraviolet rays irradiated by the second illumination part 110 do not flow out. The lid portion 116 may be spaced apart from the guide portion 112 by a predetermined area. At this time, the space between the lid part 116 and the guide part 112 serves as a discharge port 125 communicating with the second air flow path 123 and discharging external air passing through the second air flow path 123 .

In the illumination device 100 according to the exemplary embodiment of the present invention, when the first illumination unit 106 is driven, the first radiation unit 104 transmits heat generated in the first illumination unit 106 to the first air passage 121, . The air in the first air flow path 121 adjacent to the second air flow path 123 flows in the vertical direction (i.e., the opposite direction of the gravity) To the second air flow path 123 formed by the second air flow path 123. Then, the air is moved upward along the second air passage 123 and discharged to the outside through the discharge port 125. In order to fill the vacant space of the air moved in the first air passage 121, air is introduced from the outside into the first air passage 121. Through this process, .

In this way, by circulating the ambient air naturally through heat convection using heat generated by the first illumination unit 106, the air can be circulated without a separate fan, The power consumption can also be reduced while reducing the cost. In addition, since there is no separate fan, it is possible to circulate air without generating noise.

When the sunlight is shining as in the daytime, the photocatalyst member 131 formed on the inner wall of the guide portion 112 when the outside air passes through the second air passage 123 reacts with ultraviolet rays contained in the sunlight Thereby producing an air purifying material. Then, the air purifying material moves along the second air flow path 123 and is discharged to the outside through the discharge port 125, thereby purifying the air around the lighting apparatus 100. The lighting apparatus 100 can adjust the number of the first light sources 106b of the first illumination unit 106 to be driven according to the degree of contamination of the ambient air. That is, as the pollution degree of the surrounding air is high, the lighting apparatus 100 can simultaneously drive a large number of the first light sources 106b, thereby allowing the air circulation by the heat convection to be performed more quickly.

In the nighttime, the second illumination unit 110 may be driven to emit ultraviolet rays, and the photocatalytic member 131 may generate air purifying substances in response to ultraviolet rays emitted from the second illumination unit 110. In this case, it is possible to purify air around the lighting apparatus 100 by generating an air purifying material even in a dark space without nighttime or natural light. The second illuminating unit 110 may be driven according to the illuminance around the illuminating apparatus 100. For example, the illumination apparatus 100 may include an illuminance sensor for measuring the illuminance of the surroundings, and may drive the second illumination unit 110 when the illuminance value measured is less than a predetermined illuminance value.

On the other hand, an ultraviolet fluorescent material may be formed on the outside of the photocatalytic member 131 in the guide part 112 instead of the ultraviolet filter member 133. The ultraviolet phosphor absorbs ultraviolet light and is excited by ultraviolet light to generate visible light. In this case, the second illuminating unit 110 can be used for illumination while the photo-catalyst member 131 is activated through the second illuminating unit 110 to generate the air purifying material.

2 is a sectional view showing a lighting apparatus according to another exemplary embodiment. Here, the difference from the embodiment shown in FIG. 1 will be mainly described.

Referring to FIG. 2, the lighting apparatus 100 is divided into a space between the upper space of the housing part 102 (i.e., the space between the first heat radiation part 104 and the second heat radiation part 108 and the housing part 102) The space in which the air passage 121 is formed) may be opened. The rim support portion 118 may be formed along the upper rim of the housing portion 102. In other words, the rim support part 118 serves to support the structures provided on the upper part of the housing part 102, and the entire upper space of the housing part 102 can be opened.

Here, the rim support portion 118 may be provided along the rim of the housing portion 102. The rim support portion 118 may be formed in a mesh shape to communicate with the outside. That is, air holes 118a may be formed in the rim support portion 118 to allow external air to flow.

The illumination device 100 may be formed with an inclined portion 112a at a lower end of the guide portion 112 (that is, a portion adjacent to the first air passage 121). That is, the portion where the first air passage 121 and the second air passage 123 communicate with each other may be formed to have a predetermined inclination, rather than being formed vertically. In this case, the flow of air can be made more smooth as compared with the case where the lower end of the guide portion 112 is vertically formed. The inclined portion 112a may have a straight inclination, but is not limited thereto and may be curved.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, . Therefore, the scope of the present invention should not be limited to the above-described embodiments, but should be determined by equivalents to the appended claims, as well as the appended claims.

100: Lighting device
102: housing part
104: first heat-
106: first illumination unit
106a: a first substrate
106b: a first light source
108: second heat-
110: second illumination unit
110a: second substrate
110b: a second light source
112: guide portion
112a:
114:
114a: lid part receiving groove
116:
118: rim support
118a: Air hole
121: first air passage
123: the second air passage
131: Photocatalytic member
133: ultraviolet filter element
135: reflective member

Claims

A lighting apparatus comprising a first illumination unit,
A first air flow passage provided inside the illumination device and through which external air flows;
A heat dissipating unit for dissipating heat generated in the first illumination unit toward the first air passage;
A second air passage in which one side of the lighting device communicates with the first air passage and the other side communicates with the outside, the heat exchanged air of the first air passage being moved by heat convection and discharged to the outside;
A second illumination unit formed in the second air flow path and irradiating ultraviolet rays into the second air flow path;
A guide part formed along the second air flow path and including a photocatalyst member exposed in the second air flow path and generating an air purifying material in response to the ultraviolet light;
A lid part spaced apart from an end of the guide part to provide a passage through which the heat exchanged air is discharged, and to prevent the ultraviolet rays from escaping to the outside; And
And a diffusion portion which is provided to cover the first illumination portion at an upper portion of the first illumination portion and whose end portion is fixed to the guide portion and in which a lid receiving groove is formed so that the end portion of the lid portion is received.

delete

The method according to claim 1,
The illumination device includes:
And an ultraviolet filter member formed outside the photocatalyst member and blocking the ultraviolet light.

The method according to claim 1,
The illumination device includes:
And adjusts the number of light sources driven by the first illuminating unit according to the degree of air pollution around the illuminating unit.

The method according to claim 1,
The second illumination unit includes:
And when the illuminance value around the illuminator is less than or equal to a predetermined illuminance value.

The method according to claim 1,
The illumination device includes:
Further comprising an ultraviolet phosphor formed outside the photocatalyst member and absorbing the ultraviolet light to generate a visible light.

delete

The method according to claim 1,
Wherein the first air passage is provided along a horizontal direction inside the lighting apparatus,
Wherein the second air flow passage is provided along a direction opposite to gravity inside the lighting device perpendicularly intersecting the first air flow passage,
Wherein a portion communicating the first air passage and the second air passage is provided to be inclined.

The method according to claim 1,
The illumination device includes:
A housing part; And
And a plurality of air holes provided along an upper edge of the housing part and through which external air flows, and a rim supporting part communicating with the first air flow path,
Wherein the first air passage is provided so as to be open from one side to the other side of the lighting device at an upper portion of the housing portion.

A first illumination unit including at least one white light source;
A first heat dissipation unit for dissipating heat generated in the first illumination unit;
A first air passage in which outside air is introduced and in which the introduced outside air is brought into contact with the first heat dissipating unit and heat-exchanged by the first heat dissipating unit;
A second air passage formed along the opposite direction of the gravity so that the heat exchanged air of the first air passage is moved by heat convection and is discharged to the outside, ; And
A second illumination unit formed in the second air flow path and irradiating ultraviolet rays into the second air flow path;
A guide part formed along the second air flow path and including a photocatalyst member exposed to the second air flow path and generating an air purifying material in response to ultraviolet rays;
A lid part spaced apart from an end of the guide part to provide a passage through which the heat exchanged air is discharged to the outside, and to prevent the ultraviolet rays from escaping to the outside; And
And a diffusion portion that covers the first illumination portion at an upper portion of the first illumination portion and has an end fixed to the guide portion and a cover receiving groove is formed so that the end of the cover portion is received.

The method of claim 11,
The illumination device includes:
And adjusts the number of white light sources driven by the first illumination unit according to the air pollution degree around the lighting apparatus.