KR101929256B1 - Lighting device - Google Patents

Abstract

An embodiment of the present invention relates to a lighting apparatus, comprising: a body portion; A light emitting module disposed on one side of the body; And a cover portion that is rotatably coupled with respect to a center axis of one side of the body portion and is disposed to cover the light emitting module portion, wherein the cover portion includes a plurality of lenses having different optical characteristics, The light emitted from the light emitting module part is emitted through any one of the plurality of lenses.

Description

LIGHTING DEVICE

An embodiment relates to a lighting device.

Light emitting diodes (LEDs) are a type of semiconductor devices that convert electrical energy into light. The light emitting diode has advantages of low power consumption, semi-permanent lifetime, fast response speed, safety, and environmental friendliness compared with conventional light sources such as fluorescent lamps and incandescent lamps. Accordingly, much research has been carried out to replace an existing light source with a light emitting diode, and a light emitting diode has been increasingly used as a light source for lighting devices such as various liquid crystal displays, electric sign boards, and street lights used in indoor and outdoor.

As light emitting diodes are used for various applications, it is required to design an illumination device so as to have optical characteristics suitable for the application. Particularly, since the light emitting diode has a strong directivity of light, it is necessary that an optical member suitable for the application is disposed so that the light-emitting range of the lighting device using the light emitting diode is adjusted.

Embodiments provide a lighting apparatus capable of satisfying various optical requirements to solve the conventional problems.

Further, the embodiment provides a lighting device capable of selecting an appropriate beam-splitting angle according to the use.

In an embodiment, the illumination device includes a body portion; A light emitting module disposed on one side of the body; And a cover portion rotatably coupled to the body portion and disposed to cover the light emitting module portion, wherein a plurality of lenses are disposed in the cover portion, and the plurality of lenses include two or more lenses having different optical characteristics .

The cover may be rotatable with respect to a center axis of one side of the body, and the plurality of lenses may be arranged radially with respect to a rotation axis of the rotatable cover.

In another embodiment, the illumination device comprises a body portion; A light emitting module disposed on one side of the body; And a rotatable lens portion disposed on the light emitting module portion, wherein the lens portion may include two or more lenses having different optical characteristics.

The lens unit may be rotatable about a central axis of one side of the body, and the two or more lenses may be arranged radially about a rotation axis of the rotatable lens unit.

In another embodiment, the illumination device comprises a body portion; A rotatable light emitting module disposed on one side of the body; And a lens unit disposed on the light emitting module unit, wherein the lens unit may include two or more lenses having different optical characteristics.

The light emitting module part is rotatable with respect to a central axis of one side of the body part, and the light emitting module part includes a substrate and an LED disposed on the substrate. The LED is radially arranged with respect to a central axis of one surface of the body part .

Further, the light emitting module part may be disposed outside the center axis of one side of the body part.

In addition, the body may include a heat dissipating body and a heat dissipating fin disposed on the heat dissipating body.

In another embodiment, the illumination device comprises: a lens portion rotatable about a central axis; And a light emitting module portion disposed below the lens portion, wherein the lens portion rotates to change an optical characteristic of light emitted from the light emitting module portion.

In another embodiment, the illumination device includes a light emitting module portion rotatable about a central axis; And a lens unit disposed on the light emitting module unit, wherein the lens unit may include two or more lenses having different optical characteristics.

According to the embodiment, the use range of the lighting apparatus is maximized.

In addition, according to the embodiment, it is possible to satisfy various optical requirements with a single illumination device.

In addition, according to the embodiment, it is possible to use the illumination device by selecting a suitable angle of view according to the application.

1 shows an exploded perspective view of a lighting device according to an embodiment.
Fig. 2 shows a state of use of a lighting apparatus according to an embodiment.
Fig. 3 shows an exploded perspective view of a lighting apparatus according to another embodiment.
Fig. 4 shows a use state of a lighting apparatus according to another embodiment.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. It is to be understood, however, that the appended drawings illustrate the present invention in order to more easily explain the present invention, and the scope of the present invention is not limited thereto. You will know.

In the drawings, the thickness and size of each layer are exaggerated, omitted, or schematically shown for convenience and clarity of explanation. Also, the size of each component does not entirely reflect the actual size.

In the description of embodiments according to the present invention, it is to be understood that where an element is described as being formed "on or under" another element, On or under includes both the two elements being directly in direct contact with each other or one or more other elements being indirectly formed between the two elements. Also, when expressed as "on or under", it may include not only an upward direction but also a downward direction with respect to one element.

1 shows an exploded perspective view of a lighting device according to an embodiment.

The lighting apparatus 100 according to an embodiment of the present invention includes a driving unit 110, a body unit 120, a light emitting module unit 130, a body unit 120, And a cover portion 140 which is formed of a metal plate.

Hereinafter, the illumination device 100 according to one embodiment will be described in detail with respect to each component in detail, and the principle that the illumination device 100 according to one embodiment provides various optical characteristics according to the use mode will be described.

<Driving unit 110>

The driving unit 110 may be electrically connected to the light emitting module unit 130 by wires passing through the through holes formed in the central portion of the body unit 120. The driving unit 110 is connected to a power source from the outside to supply power to the illumination device 100.

The driving unit 110 may include a plurality of components for controlling the power supply. The plurality of components may include, for example, a direct current (DC) converter that converts AC power supplied from an external power source to DC power, , An ESD (ElectroStatic discharge) protection device for protecting the light emitting module unit 130, and the like.

The driving unit 110 may be connected to an external power source through an upper socket unit 115 to be supplied with power from an external power source and the wiring from the driving unit 110 may pass through a central portion of the body unit 120, (130), and power can be supplied to the light source module unit.

The lower surface of the driving part 110 may be disposed to be in contact with the upper surface of the body part 120 and heat generated from the driving part 110 may be transmitted to the body part 120 functioning as a heat radiating member.

<Body part 120>

The body part 120 may be disposed under the driving part 130. The body 120 serves not only as a housing for providing a space in which the light source module unit 130 can be disposed, but also as a heat sink.

The body part 120 is disposed on the light emitting module part 130 under the driving part 110 to conduct heat generated by the driving part 110 and the light emitting module part 130 and to discharge the heat.

Referring to FIG. 1, the body 120 may include a cylindrical heat dissipating body portion and a heat dissipating fin 125 formed on an outer circumferential surface of the heat dissipating body portion. The plurality of radiating fins may be disposed radially along the surface of the body portion 120. The shape of the body portion 120 increases the surface area to improve the heat radiation efficiency of the heat discharging body 120.

If the number of the heat dissipation fins 125 is increased, the area of the body 120 in contact with the air is increased, so that the heat dissipation efficiency is improved. On the other hand, the manufacturing cost increases and structural weakness may occur. On the other hand, since the amount of heat generated depends on the power capacity of the lighting apparatus, it is necessary to determine the number of the heat dissipation fins 125 according to the power capacity.

The body part 120 may include a driving part 110 and / or a light emitting part such that the heat generated from the driving part 110 and / or the light emitting module part 130 is directly conducted, And can be tightly coupled to the module unit 130. The radiating fin 125 radiates the heat transferred from the driving unit 110 and / or the light emitting module unit 130 to the outside, and may be integrally formed on the outer circumferential surface of the body unit 120 in the vertical direction.

The body portion 120 may be formed of a metal material or a resin material having excellent heat dissipation efficiency, but the present invention is not limited thereto. For example, the body part 120 may be formed of a material such as iron (Fe), aluminum (Al), nickel (Ni), copper (Cu), silver (Ag), tin (Sn), magnesium And may be made of an alloy material including at least one of them. Carbon steel and stainless steel may be used, and corrosion-resistant coatings or insulating coatings may be applied to the surface within a range that does not affect the thermal conductivity.

Although not shown in the drawings, a heat sink may be disposed between the driving unit 110 and / or the light emitting module unit 130 and the body unit 120. The heat radiating plate may be formed of a thermally conductive silicone pad or a thermally conductive tape having excellent thermal conductivity and may effectively transmit heat generated by the driving unit 110 and / or the light emitting module unit 130 to the body unit 120.

A coupling groove 127 may be formed in the lower part of the body part 120 so that the cover part 140 covering the light emitting module part 130 can be coupled to the body part 120. The coupling groove 127 may be a screw groove as shown in FIG. 1, and the cover portion 140 may be rotatably coupled to the body portion 120 through a screw groove.

A receiving groove in which the light emitting module unit 130 is disposed may be formed on a lower surface of the body 120. 1, the receiving groove may not be formed. In this case, the light emitting module unit 130 may be placed in contact with or disposed closely to the lower surface of the body 120. [ The width and depth of the receiving groove may be changed according to the width and the thickness of the driving unit 110 and the light emitting module unit 130. In addition, the light emitting module unit 130 may be rotatably coupled to the body portion.

&Lt; Light emitting module part &

The light emitting module unit 130 may include one or more LEDs and an LED mounting substrate on which one or more LEDs are mounted. A plurality of LEDs may be arranged on the LED mounting substrate, and the number and arrangement of LEDs arranged may be arbitrarily adjusted according to the required illuminance. The light emitting module unit 130 may employ a configuration in which a large number of LEDs are focused to facilitate handling and mass production.

The LED mounting substrate may be a printed circuit pattern on an insulator. For example, the LED mounting substrate may include a printed circuit board (PCB), a metal core PCB, a flexible PCB, and a ceramic PCB And a COB (Chips On Board) type that can directly bond an unpackaged LED chip on a printed circuit board can be used. In addition, the substrate may be formed of a material that efficiently reflects light, or may be formed of a color whose surface is efficiently reflected, for example, white, silver, or the like.

The LED mounted on the substrate may be a red, green, blue, or white light emitting diode that emits red, green, blue, or white light, respectively, but is not limited thereto.

The light emitting module unit 130 may be disposed on the lower surface of the body unit 120 and the LEDs of the light emitting module unit 130 may not be uniformly distributed on the lower surface of the body unit 120, . Further, the light emitting module unit 130 may be disposed outside the central axis of the lower surface of the body 120. Alternatively, the LEDs of the light emitting module unit 130 may be disposed radially with respect to the center axis of one side of the body part.

The light emitting module unit 130 may be covered with the cover unit 140. The cover portion 140 may include a plurality of lenses, and the plurality of lenses may include two or more lenses having different optical characteristics.

In FIG. 1, three lenses having different optical characteristics are arranged in the cover part 140. FIG. The light emitting module unit 130 may be disposed in a region corresponding to one lens so that the light emitting unit 100 emits light only through a lens disposed in a region corresponding to the light emitting module unit 130. A lens having different optical characteristics is positioned on the light emitting module section 130 and a light having different optical characteristics is emitted from the illumination device in accordance with the lens positioned on the light emitting module section 130 .

1, the cover unit 140 is rotated. However, the light emitting module unit 130 disposed on the body unit 140 may be configured to rotate about the center axis of one side of the body unit. The light emitting module unit 130 may be configured to be rotatable around the central axis of the light emitting module unit 130 itself or the illumination unit 100. The rotation adjusting unit extending from the substrate of the light emitting module unit 130 may be protruded to the outside of the lighting apparatus 100 so as to adjust the rotation of the light emitting module unit 130. [

The cover 140 covering the light emitting module unit 130 and the lens will be described in more detail below.

<Cover part 140>

The cover 140 may be rotatably coupled to the body 120 and may be disposed to cover the light emitting module 130.

1, the cover 140 is rotatably coupled to the body 120 through a screw groove, but the manner in which the cover 140 is coupled to the body 120 is not limited thereto. The cover portion 140 and the body portion 120 can be coupled in various manners as long as the cover portion 140 is rotatably coupled to the body portion 120. [

The cover 140 may be configured to be rotatable about a center axis of one side of the body 120 where the light emitting module 130 is disposed. A plurality of lenses 141, 143, and 145 may be disposed on the cover 140. The plurality of lenses 141, 143, and 145 may be radially arranged around the rotation axis of the rotatable cover 140 .

As shown in FIG. 1, the light emitting module unit 130 may be offset from the central axis of one side of the body 120, and may be disposed on one side. Each of the plurality of lenses 141, 143 and 145 is radially arranged around the rotation axis of the cover 140 so that each lens rotates in a region where the light emitting module 130 is disposed As shown in Fig.

As described above, the plurality of lenses may include two or more lenses having different optical characteristics. Here, the optical property means the optical property that the lens can have, such as the color of light emitted through the lens, the transparency of the lens, the reflectivity, the refractive index, and the diffraction angle.

The lenses 141, 143, and 145 may have various shapes, for example, the lenses 141, 143, and 145 may include one of a parabola type lens, a Fresnel lens, a convex lens, .

The lenses 141, 143, and 145 may be spaced apart from each other by a predetermined distance from the light emitting module unit 130, and the distance may be adjusted by changing the height of the side surface of the cover unit 140.

The lenses 141, 143, and 145 may be formed of glass, polymethylmethacrylate (PMMA), polycarbonate (PC), or the like. Further, according to the design of the illumination device 100, the lenses 141, 143, and 145 may be formed to include phosphors, or may be formed of a light excitation film including phosphors on the incident or emergent surfaces of the lenses 141, (PLF: Photo Luminescent Film) may be attached. The light emitted from the light emitting module unit 130 by the phosphor can be emitted with a changed wavelength.

The cover portion 140 of FIG. 1 includes lenses 141, 143, and 145 having three different diffractive angles. Of course, the number of lenses arranged in the cover portion 140 is not limited thereto.

1, the first lens 141 has a diffraction angle of 15 degrees, the second lens 143 has a diffraction angle of 30 degrees, and the third lens 145 has a diffraction angle of 60 degrees. The extent to which the light of the illumination device 100 is dispersed can be changed depending on which lens is disposed in the area corresponding to the light emitting module unit 130. [

An optical member including a plurality of lenses may be referred to as a lens portion. The lens unit may be disposed on the light emitting module unit 130 and may be configured to be rotatable about a center axis of one surface of the body unit 120 on which the light emitting module unit 130 is disposed. It is needless to say that the lens part can be configured to be rotatable about its own central axis or the central axis of the illuminating device.

The lens portion includes two or more lenses having different optical characteristics, and the plurality of lenses can be arranged radially about the rotation axis of the rotatable lens portion.

Fig. 2 shows a state of use of a lighting apparatus according to an embodiment.

2A shows a case where the first lens 141 is arranged in a region corresponding to the light emitting module section 130 and FIG.2B shows a case in which the second lens 143 corresponds to the light emitting module section 130 2 (c) shows a case where the third lens 145 is disposed in a region corresponding to the light emitting module section 130. In this case, as shown in FIG.

In each case, the illuminating device 100 emits light with a different angle of incidence, so that each time the user rotates the cover 140 by 60 degrees, Can be implemented.

Fig. 3 shows an exploded perspective view of a lighting device 200 according to another embodiment.

The lighting apparatus 200 according to another embodiment is rotatably coupled to the driving unit 210, the body unit 220, the light emitting module unit 230, and the body unit 220 and is disposed so as to cover the light emitting module unit 230 And a cover portion 240 which is formed of a resin.

The illumination device 200 of the other embodiment has a configuration similar to that of the illumination device 100 in one embodiment but differs in the configuration of the light emitting module part 230 and the cover part 240, The light emitting module part 230 and the cover part 240 of the display device 200 will be described.

Referring to FIG. 3, the light emitting module unit 230 of the lighting device 200 has four LED chips, one at the center of the lower surface of the body 220 and the other three at the center of the lower surface of the body As shown in Fig. However, the number of LED chips that can be disposed in the light emitting module unit 230 is not limited thereto.

The cover portion 240 includes seven lenses composed of a first lens portion 241 composed of three lenses and a second lens portion 243 composed of four lenses. The first lens unit 241 and the second lens unit 243 have different optical characteristics.

Fig. 4 shows a use state of a lighting apparatus according to another embodiment.

The illumination device may be configured such that light is emitted through the first lens unit 241 as shown in FIG. 4 (a). Depending on the optical characteristics of the first lens unit 241, Light can be emitted from each lens of the portion 241.

4B shows a case in which light is emitted through the second lens unit 243 and the second lens unit 243 has an angle of diffraction of 15 degrees so that light from each lens of the second lens unit 243 Light can be emitted with an angle of incidence of 15 degrees.

Thus, by turning the cover portion 240, it is possible to provide an illuminating device that emits light having different optical characteristics, although it is one illuminating device.

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, It will be understood that various modifications and applications are possible. For example, each component specifically shown in the embodiments can be modified and implemented. It is to be understood that all changes and modifications that come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

100, 200: Lighting device
110, 210:
120, 220:
130, and 230:
140, 240:

Claims (15)

A body portion;
A light emitting module disposed on one side of the body; And
And a cover portion coupled to be rotatable with respect to a central axis of one surface of the body portion and disposed to cover the light emitting module portion,
Wherein the cover portion includes a plurality of lenses having different optical characteristics, wherein at least one of the plurality of lenses includes a phosphor,
Wherein the light emitting module part is biased to one side out of the central axis,
And light emitted from the light emitting module portion is emitted through any one of the plurality of lenses by rotation of the cover portion.
delete The method according to claim 1,
Wherein the plurality of lenses are arranged radially about the central axis.
A body portion;
A light emitting module disposed on one side of the body and including a plurality of LEDs; And
And a cover portion coupled to be rotatable with respect to a central axis of one surface of the body portion and disposed to cover the light emitting module portion,
Wherein the cover portion includes a first lens portion and a second lens portion having different optical characteristics,
Wherein each of the first lens unit and the second lens unit includes a plurality of lenses, at least one of the plurality of lenses includes a phosphor,
Wherein at least one of the plurality of LEDs is disposed on the central axis and the remainder is arranged radially about the central axis,
And light emitted from the plurality of LEDs is emitted through either the first lens unit or the second lens unit by the rotation of the cover unit.
delete 5. The method of claim 4,
Wherein the plurality of lenses of the first lens unit and the plurality of lenses of the second lens unit are arranged radially about the central axis.
The method according to claim 1 or 4,
And one surface of the body portion has a receiving groove for receiving the light emitting module portion.
The method according to claim 1 or 4,
And a side surface of the body portion has a helical engagement groove in which the cover portion is engaged.
delete The method according to claim 1 or 4,
Wherein at least one of the plurality of lenses includes a light excitation film including the phosphor disposed on at least one of an incident surface and an emission surface of the lens.
The method according to claim 1 or 4,
Wherein the optical characteristic is at least one of a color temperature, a transparency, a reflectivity, a refractive index, and a diffraction angle of emitted light. delete delete delete delete

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