KR20130005372A

KR20130005372A - Lighting device

Info

Publication number: KR20130005372A
Application number: KR1020110066714A
Authority: KR
Inventors: 민병국; 공경일
Original assignee: 엘지이노텍 주식회사
Priority date: 2011-07-06
Filing date: 2011-07-06
Publication date: 2013-01-16

Abstract

Embodiment of the present invention relates to a lighting device, the body portion; A light emitting module unit disposed on one surface of the body unit; And a reflector disposed outside the light emitting module unit, wherein the reflector includes a plurality of reflecting plates, and one end of the plurality of reflecting plates may be coupled to one surface of the body part to be rotatable based on one end of the reflecting plate. Provide a lighting device.

Description

LIGHTING DEVICE

Embodiments relate to a lighting device.

Light emitting diodes (LEDs) are a type of semiconductor device that converts electrical energy into light. Light emitting diodes have the advantages of low power consumption, semi-permanent life, fast response speed, safety and environmental friendliness compared to conventional light sources such as fluorescent and incandescent lamps. Accordingly, many researches have been conducted to replace the existing light source with light emitting diodes, and light emitting diodes have been increasingly used as light sources for lighting devices such as liquid crystal display devices, electronic displays, and street lights.

As light emitting diodes are used in various applications, it is required to design lighting devices to have optical characteristics suitable for the applications. As a related patent document, Korean Patent Publication No. 10-2011-0050911 may be referred.

In particular, since the light emitting diodes have a strong linearity of light, it is necessary to arrange an optical member suitable for a purpose so that the light distribution range of the lighting apparatus using the light emitting diodes is controlled.

The embodiment is to solve the conventional problems, and provides a lighting device that can satisfy various optical requirements.

In addition, the embodiment provides a lighting device that can select a suitable light distribution angle according to the application.

In an embodiment, the lighting device comprises a body portion; A light emitting module unit disposed on one surface of the body unit; And a reflector disposed outside the light emitting module unit, wherein the reflector includes a plurality of reflecting plates, and one end of the plurality of reflecting plates may be coupled to one surface of the body part to be rotatable based on one end of the reflecting plate. .

In another embodiment, the lighting device comprises a body portion; A light emitting module unit disposed on one surface of the body unit; A hinge part disposed on one surface of the body part; And a reflector coupled to one surface of the body so that the inclination of one surface of the body may vary, wherein the reflector is disposed to surround the light emitting module, and one end of the reflector is disposed on one surface of the body through the hinge. Can be combined.

The reflector may include a plurality of reflecting plates, and one end of the plurality of reflecting plates may be coupled to one surface of the body portion.

In addition, the plurality of reflecting plates may be wider from one end to the other end.

In addition, further comprising a cap coupled to the reflector, the other end of the plurality of reflecting plate may be in contact with the inner surface of the cap.

In addition, while surrounding the outer portion of the cap portion, further includes a cover portion coupled to the body portion, the cover portion may be movable up and down.

In addition, the cover portion is rotatably coupled to the body portion, it can move up and down in accordance with the rotation.

In addition, when the cover part moves upward, the other end of the reflector is closer to one surface of the body part, and when the cover part moves downward, the other end of the reflector may be far from one surface of the body part.

In another embodiment, the lighting device comprises a body portion; A light emitting module unit disposed on one surface of the body unit; A reflector disposed to surround the light emitting module unit; A cap unit coupled to the reflector; And a cover part coupled to the body part while surrounding the outer portion of the cap part, and one end of the reflector may be coupled to one surface of the body part so that the inclination of the reflector varies according to the position of the cover part. .

In addition, the light emitting module may further include a hinge portion disposed outside, and the reflector may be coupled to the body portion through the hinge portion.

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

In addition, according to the embodiment, a single lighting device can satisfy various optical requirements.

In addition, according to the embodiment it is possible to use a lighting device by selecting a suitable light distribution angle according to the application.

1 is an exploded perspective view of a lighting apparatus according to an embodiment.
2 illustrates a case in which the reflector is fully unfolded in the lighting apparatus according to the embodiment.
3 shows in detail how each of the reflecting plates is combined with the body portion.
4 illustrates a use form of a lighting device according to an embodiment.

Hereinafter, exemplary 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 addition, the reference to the top or bottom of each component will be described with reference to the drawings. In the drawings, the thickness or size of each layer is exaggerated, omitted, or schematically illustrated for convenience and clarity. In addition, the size of each component does not necessarily reflect the actual size.

In the description of the embodiment according to the present invention, when one element is described as being formed on the "on or under" of another element, (On or under) includes both the two elements are in direct contact with each other (directly) or one or more other elements are formed indirectly formed (indirectly) between the two elements. In addition, when expressed as "on" or "under", it may include the meaning of the downward direction as well as the upward direction based on one element.

1 is an exploded perspective view of a lighting apparatus according to an embodiment.

Lighting device 100 according to an embodiment of the present invention is a driving unit 110, the body portion 120, the light emitting module 130, the reflector 140 disposed on the outside of the light emitting module 130, the reflector It may include a covering cap portion 150 and a cover portion 160 surrounding the outer portion of the cap portion and coupled to the body portion.

Hereinafter, the lighting device 100 according to an embodiment will be described in detail with reference to each component, and the principle that the lighting device 100 according to an embodiment provides various optical characteristics according to the use form will be described.

The driving unit 110 may be electrically connected to the light emitting module unit 130 by a wire that is positioned on the body unit 120 and passes through a through hole drilled in a 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 lighting device 100.

The driving unit 110 may include a plurality of components for power control therein, and the plurality of components may include, for example, a DC converter for converting AC power provided from an external power source into DC power, and a light emitting module unit 130. A driving chip for controlling the driving of the control panel), an electrostatic discharge (ESD) protection element for protecting the light emitting module unit 130, and the like.

The driving unit 110 may be connected to an external power source through the upper socket unit 115 to receive power from the external power source, and the wiring from the driving unit 110 passes through the central portion of the body unit 120 to light source modules. Connected to the unit 130, power may be supplied to the light source module unit.

The lower surface of the driving unit 110 may be disposed to be in contact with the upper surface of the body portion 120, and heat generated from the driving unit 110 may be transferred to the body portion 120 functioning as a heat sink through the contact surface.

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

The body part 120 may be disposed on the light emitting module unit 130 under the driving unit 110 to perform a function of conducting and emitting heat generated from the driving unit 110 and the light emitting module unit 130.

Referring to FIG. 1, the body part 120 may include a heat dissipation body 125 having a cylindrical shape and a heat dissipation fin 125 formed on an outer circumferential surface of the heat dissipation body part. The plurality of heat dissipation 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 sink (120).

Increasing the number of heat dissipation fins 125 increases the area in which the body portion 120 is in contact with the air, thereby improving heat dissipation efficiency, while increasing production cost and causing structural weakness. On the other hand, since the amount of heat is also changed according to the power capacity of the lighting device, it is necessary to determine the appropriate number of heat radiation fins 125 according to the power capacity.

Body portion 120 is the drive unit 110 and / or the light emitting module unit 130, the heat generated from the drive unit 110 and / or light emitting so that the heat is transmitted directly to the outside through the heat radiation fin (125) It may be in close contact with the module unit 130. The heat dissipation fin 125 serves to discharge heat transferred from the driving unit 110 and / or the light emitting module unit 130 to the outside, and may be integrally formed in the vertical direction on the outer circumferential surface of the body unit 120.

The body part 120 may be formed of a metal material or a resin material having excellent heat dissipation efficiency, but is not limited thereto. For example, the body portion 120 may be formed of a material such as iron (Fe), aluminum (Al), nickel (Ni), copper (Cu), silver (Ag), tin (Sn), magnesium (Mg), or the like. It may be, and may be made of an alloy material containing at least one of these. Carbon steel and stainless steel can also be used. Corrosion-resistant coating or insulation coating can be applied to the surface without affecting 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 sink may be formed of a thermally conductive silicon pad or a thermally conductive tape having excellent thermal conductivity, and may effectively transfer heat generated by the driving unit 110 and / or the light emitting module unit 130 to the body unit 120.

The lower surface of the body portion 120 may be formed with a receiving groove in which the light emitting module 130 is disposed. However, the receiving groove may not be formed as in the embodiment of FIG. 1, and in this case, the light emitting module 130 may be disposed in contact with or in close contact with the bottom surface of the body 120. The width and depth of the accommodation groove may vary depending on the width and thickness of the driving unit 110 and the light emitting module unit 130. In addition, the light emitting module 130 may be rotatably coupled to the body portion.

The reflector 140 surrounding the light emitting module 130 and disposed outside the light emitting module 130 is coupled to the bottom surface of the body 120 to be narrowed or unfolded. The method of connecting the body portion 120 and the reflector 140 is discussed in more detail in the description of FIG. 3.

A coupling groove 127 may be disposed below the body portion 120 such that the cover portion 160 surrounding the cap portion 150 covering the reflector 140 may be coupled to the body portion 120. The coupling groove 127 may be a screw groove as shown in FIG. 1, and the cover portion 160 may be rotatably coupled to the body portion 120 through the screw groove.

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 quantity and arrangement of the LEDs to be arranged may be arbitrarily adjusted according to required illuminance. The light emitting module unit 130 may adopt a form in which a plurality of LEDs are focused to facilitate handling and mass production.

The LED mounting substrate may be a circuit pattern printed on the insulator, and includes, for example, a general printed circuit board (PCB), a metal core PCB, a flexible PCB, a ceramic PCB, and the like. In addition, it is possible to use a COB (Chips On Board) type that can directly bond the LED chip unpacked on the printed circuit board. In addition, the substrate may be formed of a material that reflects light efficiently, or the surface may be formed of a color that reflects light efficiently, 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 130 may be disposed on a lower surface of the body 120, and the LEDs of the light emitting module 130 may be disposed on a portion of the light emitting module 130 without being evenly distributed on the lower surface of the body 120. . In addition, the light emitting module 130 may be disposed off the central axis of the lower surface of the body 120. Alternatively, the LED of the light emitting module 130 may be disposed radially with respect to the central axis of one surface of the body portion.

The reflector 140 may be disposed outside the light emitting module unit 130. The reflector 140 disposed to surround the light emitting module unit 130 may reflect light generated from the light emitting module unit 130 to adjust the light distribution angle and the light distribution range of the light emitted from the lighting device 100.

The reflector 140 disposed outside the light emitting module unit 130 will be described in more detail below.

Reflector (140)

2 illustrates a case in which the reflector is fully unfolded in the lighting apparatus according to the embodiment.

The reflector 140 may be disposed to surround the light emitting module unit 130 at the outside of the light emitting module unit 130. The reflector 140 includes a plurality of reflecting plates 140a, and one end of the reflecting plate 140a is coupled to one surface of the body portion 120 of the lighting apparatus 100.

When the portion coupled to one surface of the body portion 120 in the reflecting plate 140a is referred to as one end, the opposite portion of the reflecting plate 140a away from the body portion 120 may be referred to as the other end. The reflecting plate 140a may have a shape in which a width thereof becomes wider from one end to the other end.

Unfolding of the reflector 140 means that each of the reflecting plates 140a moves in a lying down direction as shown in FIG. 2, so that the other end of the reflecting plate 140a approaches one surface of the body portion 120, and the reflector 140 is narrowed. That is, each of the reflecting plates 140a may move in a direction perpendicular to the body portion 120 such that the other end of the reflecting plate 140a is far from one surface of the body portion 120.

As shown in FIG. 1, the reflectors 140 may be narrowed while the portions overlapping each other with the reflecting plates 140a become larger, and the portions overlapping with the reflecting plates 140a may be unfolded as shown in FIG. 2. .

The reflector 140 may be coupled to one surface of the body portion 120 such that the inclination of the reflector 140 with respect to one surface of the body portion is variable. Specifically, the reflector plate 140a constituting the reflector 140 may be coupled to one surface of the body portion so as to be rotatable based on one end of the reflector plate 140a.

3 illustrates in detail how each of the reflecting plates 140a is coupled with the body 120.

The light emitting module 130 may have a hinge portion 131 to which the reflecting plate 140a is rotatably coupled. The hinge part 131 is inserted into the groove of the reflecting plate 140a, and the pin 141 penetrating the hinge part 131 is fitted into the inner groove of the reflecting plate 140a, so that the reflecting plate 140a is rotatable. It may be connected to the unit 120.

The hinge portion 131 may be connected to an outer portion of the light emitting module 130, but may be disposed on one surface of the body 120 in which the light emitting module 130 is disposed.

In FIG. 3, only one reflector plate 140a is shown to show how the reflector 140 and the body portion 120 are coupled. In addition to the illustrated reflector plate 140a, the remaining reflector plates may be combined with the body part in the same manner, and thus, the reflector 140 may be connected with the body part 120 so that the reflector 140 may be expanded or narrowed.

The strength of the coupling of the hinge portion 131 and the reflector plate 140a may be variously selected according to the embodiment of the lighting apparatus 100. When the hinge portion 131 and the reflecting plate 140a are loosely coupled, the reflecting plate 140a is automatically narrowed by gravity when the lighting device 100 is installed to irradiate downward.

In this case, the lower part of the reflector 140 includes a cap part 150 having an inner surface in contact with the reflector 140 and a cover part 160 surrounding the cap part, so that the cover part 160 and the cap part 150 move up and down. , Limiting the height at which the reflector 140 can be unfolded, thereby controlling unfolding of the reflector 140.

When the hinge portion 131 and the reflecting plate 140a are closely coupled, the reflecting plate 140a is fixed at a position set by the user, and the user can adjust the angle of the reflector 140a according to a desired lighting effect. .

The material of the reflector 140 may be formed of a metal material or a resin material having high reflection efficiency. The resin material may include, for example, any one of PET, PC, and PVC resin, and the metal material may include silver (Ag), an alloy including silver (Ag), aluminum (Al), or aluminum (Al). It may include at least one of the alloys included.

In addition, the curved surface of the reflector 140 may be coated with silver (Ag), aluminum (Al), white PSR (Photo Solder Resist) ink, a diffusion sheet, or the like, or an oxide film may be formed by anodizing. Can be formed.

However, the material and the color of the reflector 140 are not limited, and this may be variously selected according to the lighting to be implemented by the lighting device 100.

Referring to FIG. 1, the cap part 150 is disposed below the reflector 140, and the cover part 160 is disposed to be coupled to the body part 120 while surrounding the outer portion of the cap part 150.

The inner surface of the cap portion 150 may be configured to contact the reflector 140. The cover part 160 may be coupled to the body part 120 while surrounding the outer portion of the cap part 150 to perform a function of fixing the position of the cap part 150 and the reflector 140.

The cap unit 150 may function as an optical member such as a lens, and the cap unit 150 may be formed of a material such as glass, polymethylmethacrylate (PMMA), or polycarbornate (PC). In addition, according to the design of the lighting apparatus 100, the cap portion 150 is formed to include a phosphor, or a photo luminescent film (PLF: Photo Luminescent Film) containing the phosphor on the incidence or exit surface of the cap portion 150 is It may be attached. Light emitted from the light emitting module unit 130 by the phosphor may be emitted by changing the wavelength.

The cap unit 150 may have various shapes as a lens. For example, the light emitting portion of the cap unit 150 may have a shape such as one of a parabolic lens, a Fresnel lens, a convex lens, or a concave lens. Can be.

The cover 160 has an opening in the center, and the cap 150 is seated in the opening of the cover 160 to be fixed. In FIG. 1, the cover part 160 is rotatably coupled with the body part 120 through a screw groove, but the manner in which the cover part 160 is coupled to the body part 120 is not limited thereto. If the cover portion 160 can move up and down, of course, the body portion 120 and the cover portion 160 may be combined in other forms.

4 shows a usage of a lighting device according to one embodiment.

In FIG. 4, the cover part 160 rotates and moves up and down, and the cap part 150 moves up and down together with the cover part 160. Accordingly, the inner surface of the cap unit 150 may push the other end portion of the reflector to limit the height at which the reflector 140 is unfolded to control the extent to which the reflector 140 is unfolded and narrowed. The inclination of the reflector 140 is changed according to the position of the cover 160, so that various light distribution angles can be realized through the movement of the cover 160.

4 (a) is a case where the cover portion 160 is lowered and a large space is formed between one surface of the body portion 120 and the cap portion 150. In this case, the reflector 140 is narrowed so that the illumination device 100 has a narrow light distribution angle and a light distribution range.

4B illustrates a case in which the cover 160 is lifted upward to narrow the space between one surface of the body 120 and the cap 150. In this case, the reflector 140 is spread out widely so that the lighting device 100 has a wide light distribution angle and a light distribution range.

As such, the lighting device 100 according to an embodiment may provide various light distribution angles and light distribution ranges according to a user's needs. Therefore, the user may install one lighting device to obtain various lighting effects.

Although the above description has been made with reference to the embodiments, these are merely examples and are not intended to limit the present invention. Those skilled in the art to which the present invention pertains are not illustrated above without departing from the essential characteristics of the present embodiments. It will be appreciated that many variations 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: lighting device
110: drive unit
120:
130: light emitting module
140: reflector
150: cap
160: Cover part

Claims

A body portion;
A light emitting module unit disposed on one surface of the body unit; And
It includes a reflector disposed on the outside of the light emitting module unit,
The reflector includes a plurality of reflecting plates, one end of the plurality of reflecting plates are coupled to one surface of the body portion such that the reflecting plate is rotatable relative to one end of the reflecting plate,
Lighting device.

A body portion;
A light emitting module unit disposed on one surface of the body unit;
A hinge part disposed on one surface of the body part; And
It includes a reflector coupled to one surface of the body portion so that the inclination with respect to one surface of the body portion,
The reflector is disposed to surround the light emitting module unit,
One end of the reflector is coupled to one surface of the body portion through the hinge portion,
Lighting device.

The method of claim 2,
The reflector includes a plurality of reflecting plates, one end of the plurality of reflecting plates are coupled to one surface of the body portion,
Lighting device.

The method according to claim 1 or 3,
The plurality of reflecting plate is wider from one end to the other end,
Lighting device.

The method according to claim 1 or 3,
Further comprising a cap coupled to the reflector,
The other end of the plurality of reflecting plate is in contact with the inner surface of the cap portion,
Lighting device.

The method of claim 5, wherein
Covering the outer portion of the cap portion, further comprising a cover portion coupled to the body portion,
The cover part is movable up and down,
Lighting device.

The method according to claim 6,
The cover portion is rotatably coupled to the body portion, and moves up and down in accordance with the rotation,
Lighting device.

The method according to claim 6,
When the cover portion moves upward, the other end of the reflector is closer to one surface of the body portion,
When the cover portion moves downward, the other end of the reflector is far from one surface of the body portion,
Lighting device.

A body portion;
A light emitting module unit disposed on one surface of the body unit;
A reflector disposed to surround the light emitting module unit;
A cap unit coupled to the reflector; And
While covering the outer portion of the cap portion, including a cover portion coupled to the body portion,
One end of the reflector is coupled to one surface of the body portion so that the inclination of the reflector varies depending on the position of the cover portion,
Lighting device.

The method of claim 9,
The other end of the reflector is in contact with the inner surface of the cap portion,
Lighting device.

The method of claim 9,
The cover portion is rotatably coupled to the body portion, and moves up and down in accordance with the rotation,
Lighting device.

The method of claim 9,
When the cover portion moves upward, the other end of the reflector is closer to one surface of the body portion,
When the cover portion moves downward, the other end of the reflector is far from one surface of the body portion,
Lighting device.

The method according to claim 1 or 9,
Further comprising a hinge portion disposed outside the light emitting module portion,
The reflector is coupled to the body portion through the hinge portion,
Lighting device.