KR101727381B1

KR101727381B1 - Lighting Device

Info

Publication number: KR101727381B1
Application number: KR1020150063010A
Authority: KR
Inventors: 이은미
Original assignee: 주식회사 지엘비젼
Priority date: 2015-05-06
Filing date: 2015-05-06
Publication date: 2017-04-18
Also published as: KR20160132158A

Abstract

An illumination apparatus according to an embodiment includes: a light source for emitting light; A reflecting member for reflecting the light from the light source to an outgoing light area; And a fluorescent layer formed on a part of the reflective member, wherein the reflective member includes a reflective upper surface facing the light source and a rectangular reflective surface, and the fluorescent layer is formed on the reflective side.

Description

[0001]

An embodiment relates to a lighting device.

The lighting apparatus is a device equipped with a back light for efficiently irradiating light emitted from a light source such as a bulb, indoors or outdoors. In general, the efficiency of the lighting apparatus varies greatly depending on the reflection efficiency of the light bulb.

Conventionally, a lighting device is constructed using a fluorescent lamp and a light bulb. However, a fluorescent lamp has high power consumption, short life span, and heat generation problem.

In recent years, a lighting device using an LED (Light Emitting Diode) instead of a fluorescent lamp has been developed. In the method of realizing white light using the LED, there are a method of implementing a white light at a package level by applying a phosphor to a blue light LED and a method of emitting white light by mixing red, white, and green LED elements adjacent to each other There is a three-color LED system.

The three-color LED system has a relatively high manufacturing cost and has a problem that uniform color mixture, that is, white light close to natural light, can not be realized due to different optical characteristics among the light emitting devices.

In addition, in the case of applying the phosphor to the blue light LED and realizing white light at the package level, there is a problem that the phosphor coating process and the packaging process are added, resulting in a high production cost and failure.

An embodiment relates to a lighting device using an LED.

An embodiment relates to a lighting device for outputting light having a high CRI and a homogeneous wavelength range.

The embodiment relates to a lighting device capable of improving light efficiency.

An illumination apparatus according to an embodiment includes: a light source for emitting light; A cylindrical reflecting member for reflecting light from the light source to an outgoing light area; And a fluorescent layer formed on a part of the reflective member.

The illumination device according to the embodiment can increase the CRI by applying a fluorescent layer to a part of the reflective member, and can output light in a uniform wavelength range.

The illumination device according to the embodiment has an effect of improving light efficiency by forming a reflecting member in a columnar shape.

1 is a perspective view of a lighting apparatus according to a first embodiment.
2 is an exploded perspective view of a lighting apparatus according to the first embodiment.
3 is a bottom perspective view of the reflecting member according to the first embodiment.
4 is a sectional view of a lighting apparatus according to the first embodiment.
5 is a top view showing a support member and a light source according to the first embodiment.
6 is a cross-sectional view taken along the line AA 'in FIG.
7 is a view showing the path of light of the illumination device according to the first embodiment.
8 is a cross-sectional view showing a lighting apparatus according to the second embodiment.
9 is a bottom perspective view of the reflecting member according to the third embodiment.
10 is a cross-sectional view of a lighting apparatus according to a fourth embodiment.
11 is a view showing a socket frame in which a lighting device according to a fifth embodiment and a lighting device are fastened.
12 is a view showing a lighting apparatus according to the fifth embodiment.
13 is a view showing a lighting apparatus according to the sixth embodiment.

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings. It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the inventive concept. Other embodiments falling within the scope of the inventive concept may readily be suggested, but are also considered to be within the scope of the present invention.

The same reference numerals are used to designate the same components in the same reference numerals in the drawings of the embodiments.

The fluorescent layer may be formed on a portion of the reflective side adjacent to the light source.

And a support member disposed under the reflection member and supporting the light source, wherein the fluorescent layer may be formed on a part of the reflective side adjacent to the support member.

The fluorescent layer may be formed in the entire region of the reflective side.

The ratio of the height of the reflective side to the width of the reflective upper side may be from 2: 1 to 4: 1.

The reflective side may have a rectangular shape having a height ratio of 10: 1 to 20: 3 with respect to the bottom surface.

The lower surface of the developed view of the reflective side may have a planar shape.

The fluorescent layer may include a plurality of fluorescent bands spaced apart from each other.

The fluorescent strip may have a constant separation distance.

And an auxiliary fluorescent layer facing the fluorescent layer with the light source interposed therebetween.

The auxiliary fluorescent layer may have a height corresponding to the fluorescent layer.

The auxiliary fluorescent layer may be applied to the protrusion of the supporting member.

The auxiliary fluorescent layer may be formed of the same material as the fluorescent layer.

The fluorescent layer may include a phosphor capable of generating excitation light having a wavelength other than the visible light region generated in the light source.

The fluorescent layer may include a quantum dot.

And a clip located on the outer surface of the support member.

A frame surrounding the reflective member; And an auxiliary clip mounted on an upper surface of the frame.

The reflective member has a circular reflective upper surface; And a reflective side having a developed view in a rectangular shape.

Hereinafter, a lighting apparatus according to an embodiment will be described with reference to the drawings.

FIG. 1 is a perspective view of a lighting apparatus according to a first embodiment, FIG. 2 is an exploded perspective view of a lighting apparatus according to a first embodiment, FIG. 3 is a bottom perspective view of a reflecting member according to the first embodiment, FIG. 5 is a top view showing a support member and a light source according to the first embodiment, and FIG. 6 is a sectional view taken along the line AA 'in FIG.

1 to 6, a lighting apparatus 1 according to a first embodiment may include a frame 10, a reflecting member 20, and a supporting member 30. [

The frame 10 may be a frame or a frame forming the body of the lighting device 1. [ The frame 10 may have a cylindrical shape with an empty interior. The frame 10 may have a cylindrical shape with a bottom surface opened. The frame 10 may have a cylindrical shape with an upper surface and a lower surface opened.

Although not shown, the frame 10 may further include a heat dissipating member. Alternatively, the frame 10 may be made of a material having high thermal conductivity to facilitate heat dissipation. The heat dissipation capability of the frame 10 is improved, so that the heat in the lighting apparatus 1 can be discharged to the outside, and damage to the internal structure due to heat can be prevented.

Although not shown, the heat dissipating member may be formed on the outer surface of the frame 10, and the heat dissipating member may be formed on the inner surface of the frame 10. When the radiation member is formed on the inner surface of the frame 10, the radiation member may be formed between the frame 10 and the reflection member 20.

The reflective member 20 may be inserted into the frame 10. The reflective member 20 may be fixed to the inside of the frame 10 in a sheet form. A part of the reflection member 20 may be attached to the inside of the frame 10 so that the whole of the reflection member 20 is fixed to the frame 10. [

The reflective member 20 may be formed in a shape corresponding to the frame 10. The reflective member 20 may be formed in a columnar shape having an open end.

The reflective member 20 may include a reflective upper surface 21 and reflective side 23. The reflective upper surface 21 may have a circular shape. The reflective upper surface 21 may have the same center as the circular light exit area 50. That is, the reflective upper surface 21 may have a concentric circular shape with respect to the outgoing light region 50. The reflective upper surface 21 may have a size corresponding to the outgoing area 50. The reflective upper surface 21 may be a surface parallel to the outgoing light area 50.

The reflective side 23 may have a square developed view. The reflective side 23 may have a rectangular shape. The bottom surface of the reflective side 23 may have a length corresponding to the circumference of the reflective top surface 21. [ The bottom surface of the reflective side surface 23 may have a planar shape. Since the bottom surface of the reflective side surface 23 has a planar shape, it is easy to manufacture, and the assembly is easier than the conical shape.

The reflective upper surface 21 and the reflective side surface 23 may be integrally formed. The reflective upper surface 21 and reflective side 23 may comprise the same material.

When the reflective member 20 is formed in the form of a sheet, the reflective member 20 may include a resin layer, a foam or a filler (a diffuser), a metal layer, and a protective layer. For example, the resin layer is formed of a material such as PET, PC, PV, PP and the like, and may contain therein a foaming or oil / inorganic filler such as barium sulfate or potassium carbonate. A metal layer such as aluminum or silver is formed on one surface of the resin layer and a protective layer for protecting the reflective member 20 is formed on one surface of the metal layer.

Examples of the inorganic filler for increasing the reflectance of the reflective member 20 include barium sulfate (BaSO4), calcium sulfate (CaSO4), magnesium sulfate (MgSO4), barium carbonate (BaCO3), calcium carbonate (CaCO3), potassium carbonate (K2CO3) , Magnesium hydroxide (MgCl2), aluminum hydroxide (Al (OH) 3), magnesium hydroxide (Mg (OH) 2), calcium hydroxide (Ca (OH) 2), titanium dioxide (TiO2), alumina (Al2O3) ), Talc (H2Mg3 (SiO3) 4 or Mg3Si4O10 (OH) 2), and zeolite. In addition, the reflective member 20 may not include a metal layer, and an ultraviolet absorbing layer (deterioration preventing layer) may be further included on one surface of the resin layer or may be included in the resin layer.

The thickness of the reflective member 20 may be 0.015 mm to 15 mm. The reflectivity of the reflective member 20 may be 60% to 99.8%. Further, according to another embodiment, the reflective member 20 does not include a diffusion pattern or a filler, and can be a highly reflective sheet. In this case, since the reflectivity of the reflective member 20 is high, the amount of light to be lost is small, and as a result, the amount of light to be emitted can be increased.

A photocatalyst can be applied to the surface of the reflective member 20, which reflects light, to prevent the adsorption of dust.

The photocatalyst may include a titanium compound represented by TiOx: D. Here, D means a dopant, and the dopant may include N, C, -OH, Fe, Cr, Co or V. The titanium compound may be titanium dioxide (TiO2) or titanium nitrate (TiON), and may be coated with hydrophilic particles using fine particles. The particle diameter of the photocatalyst may be several nm to several hundred nm. For example, the particle diameter of the photocatalyst may be from 5 nm to 900 nm.

The photocatalyst is coated on the reflective member 20 by applying a binder or a solution containing a photocatalyst on the surface of the reflective member 20 and dried, and the binder or the solution containing the photocatalyst is dried to a thickness of 0.05 to 20 탆 .

The electrical properties of the titanium compound exhibit a semiconducting property. The titanium compound exhibits a strong oxidizing power and is chemically stable when exposed to ultraviolet light having a short wavelength (380 nm) or less or visible light having a wavelength of 380 nm to 780 nm. That is, when the titanium compound absorbs ultraviolet rays or visible rays, electrons and holes are generated on the surface, and generated electrons and holes serve to decompose most harmful substances.

The photocatalyst has a hydrophilic effect and thus has a dust-proof effect. That is, when the water is sprayed on the surface of the photocatalyst coating, the angle of contact between the droplet sprayed on the surface of the substrate and the surface of the substrate is reduced, and the hydrophilic effect of the surface is exhibited.

The photocatalyst has the ability to oxidize and decompose various organic substances (carbon compounds). By virtue of this function, the photocatalyst is capable of oxidizing and decomposing various organic substances (carbon compounds), such as ammonia, hydrogen sulfide, acetaldehyde, trimethylamine, methylmercapthalene, methyl sulfide, It is possible to remove odors, purify air, and sterilize / antibacterial effects.

The photocatalyst may be sprayed on the surface of the reflective member 20 in a liquid phase. That is, the user can easily apply the photocatalyst to the surface of the reflecting member 20 by spraying the liquid photocatalyst on the surface of the reflecting member 20 using the injection mechanism.

The photocatalyst may be applied to the surface of the reflective member 20 by a screen printing method, a gravure printing method, a spraying method, or a post-spraying roll brush method.

The screen printing is a printing method in which a liquid phase containing a photocatalyst is uniformly applied through a fine mesh formed on a screen for printing. The gravure printing is performed by applying a liquid containing a photocatalyst, which is on a concave roller, The spraying method is a method in which a liquid phase containing a photocatalyst is sprayed onto a surface, and the post-injection roll brushing method is a method in which a liquid phase containing a photocatalyst is sprayed onto a surface thereof and then rubbed uniformly with a roll brush Method.

According to this embodiment, there is an advantage that the photocatalyst can be efficiently applied to a large amount of the reflective member 20 by the printing method.

The organic or inorganic solvent may be pretreated before the photocatalyst is applied. That is, a photocatalyst can be coated on the surface of the reflective member 20 after the organic contaminants are washed with an organic or inorganic solvent. Here, the organic or inorganic solvent may be an alkaline chemical such as acetone or alcohol, a neutral detergent, or the like.

Also, a coating layer formed of silver nano or aluminum nano may be formed on the surface of the reflective member 20, and then a photocatalyst may be coated thereon. The silver nano or aluminum coating layer has an advantage of enhancing the reflection efficiency of the reflection auxiliary device.

In addition, the photocatalyst may further include an additive for controlling the viscosity.

The reflective member 20 may be formed by a method of being applied to the inner side of the frame 10. A material having a high reflectance is applied to the inside of the frame 10, so that the reflective member 20 can be formed of a material having a high reflectance.

A fluorescent layer 25 may be formed on a part of the reflective member 20. The fluorescent layer 25 may be formed in a strip shape. A fluorescent layer 25 may be formed on a part of the reflective side 23. The fluorescent layer 25 may be formed on a part of the inner side surface of the reflective side 23.

The fluorescent layer 25 may be attached to the reflective side 23 or may be formed by applying a fluorescent material to the reflective side 23.

The fluorescent layer 25 may be formed in a lower region of the reflective side 23. The fluorescent layer 25 may be formed on a part of the reflective side 23 adjacent to the light source 40. The fluorescent layer 25 may be formed in a lower region of the reflective side 23 spaced from the reflective upper side 21. The fluorescent layer 25 may be formed in contact with one end of the reflective side 23 adjacent to the light source 40 and may be spaced apart from one end of the reflective side 23 adjacent to the light source 40, Or may be formed spaced apart.

The fluorescent layer 25 may have a constant height h. The fluorescent layer 25 may have a height h of 8 mm to 16 mm. Preferably, the fluorescent layer 25 may have a height h of 16 mm.

The fluorescent layer 25 may include an inorganic fluorescent material or an organic fluorescent material. The fluorescent layer 25 may include a quantum dot.

The concentration of the phosphor of the fluorescent layer 25 may be 10% to 50%. Preferably, the concentration of the phosphor of the fluorescent layer 25 may be 20%.

The height of the fluorescent layer 25 may vary depending on the concentration of the fluorescent material. For example, when the concentration of the fluorescent layer 25 is increased, the height of the fluorescent layer 25 can be reduced. If the height of the fluorescent layer 25 is large, the light reflected by the reflecting member 20 may be reduced and the light efficiency may be reduced. Therefore, if the concentration of the fluorescent layer 25 is adjusted to a desired color temperature, The height of the fluorescent layer 25 can be reduced.

The height of the fluorescent layer 25 may be determined according to the size of the phosphor. For example, when the size of the phosphor is large, a desired color temperature can be obtained even if the phosphor layer 25 having a small height is used. Accordingly, the height of the phosphor layer 25 can be reduced to increase the light efficiency.

The phosphor may generate excitation light having a wavelength other than the visible light region generated by the light source 40.

The fluorescent layer 25 is made of YBO3: Ce3 +, Tb3 +; BaMgAl10O17: Eu2 +, Mn2 +; (Sr, Ca, Ba) (Al, Ga) 2S4: Eu2 +; ZnS: Cu, Al; Ca8Mg (SiO4) 4Cl2: Eu2 +, Mn2 +; Ba2SiO4: Eu < 2 + >; (Ba, Sr) 2SiO4: Eu < 2 + >; Ba2 (Mg, Zn) Si2O7: Eu2 +; (Ba, Sr) Al 2 O 4: Eu 2+; Sr2Si3O8.2SrCl2: Eu2 +; (Sr, Mg, Ca) 10 (PO4) 6Cl2: Eu2 +; BaMgAl10O17: Eu < 2 + >; BaMg2Al16O27: Eu < 2 + >; Sr, Ca, Ba, Mg) P2O7: Eu < 2 + >, Mn < 2 + >; (CaLa2S4: Ce3 +, SrY2S4: Eu2 +, (Ca, Sr) S: Eu2 +, SrS: Eu2 +, Y2O3: Eu3 +, Bi3 +, YVO4: Eu3 +, Bi3 +, Y2O2S: Eu3 +, Bi3 +, Y2O2S: Eu3 + And may be a material selected from the group consisting of any one of phosphors.

The quantum dot is a nano-sized semiconductor material and exhibits a quantum confinement effect. Such a quantum dot absorbs light from an excitation source, and upon reaching an energy-excited state, emits energy corresponding to an energy band gap of the corresponding quantum dot. Therefore, when the size or the material composition of the quantum dots is controlled, the corresponding energy band gap can be controlled, and various light can be emitted to be used as a light emitting device of an electronic device.

The nano-sized semiconductor material may be selected from Group II-VI compounds, Group III-V compounds, Group IV-VI compounds, Group IV compounds, or mixtures thereof.

CdSeS, CdSeS, CdSeS, ZnSeS, ZnSeTe, ZnSTe, HgSeS, HgSeTe, HgSTe, CdZnS, HgSe, HgTe, ZnTe, ZnSe, ZnTe, ZnO, A trivalent compound such as CdZnSe, CdZnTe, CdHgS, CdHgSe, CdHgTe, HgZnS, HgZnSe, or a ternary compound such as HggZnTe, CdZnSeS, CdZnSeTe, CdZnSTe, CdHgSeS, CdHgSeTe, CdHgSTe, HgZnSeS, HgZnSeTe, HgZnSTe have.

The group III-V compound may be one of GaN, GaNAs, GaNSb, GaPAs, GaPSb, AlNP, AlNAs, GaN, GaN, GaN, GaN, GaN, AlN, AlN, AlN, InAlPb, InAlPb, InAlPb, InAlPb, InAlPb, InAlPb, InAlPb, InAlPb, InAlPb, InAlPb, InAlPb, InAlPb, InAlPb, InAlPb, , And the like.

The IV-VI compound may be at least one selected from the group consisting of ternary compounds such as SnSeS, SnSeS, SnSeTe, SnSTe, PbSeS, PbSeTe, PbSTe, SnPbS, SnPbSe and SnPbTe, SnPbSSe, SnPbSeTe , SnPbSTe, and the like.

The Group IV compound may be selected from the group consisting of single element compounds such as Si and Ge, or these element compounds such as SiC and SiGe.

In the case of the elemental compound, the trivalent compound or the mesoporous compound, the crystal structure thereof may be partially contained and exist in the same particle or in an alloy form.

The fluorescent layer 25 may include a red fluorescent material. Since the fluorescent layer 25 includes a red fluorescent material, the light from the light source 40 may be reflected to the fluorescent layer 25 to increase the color rendering index (CRI) and be output to the outside. In addition, the fluorescent layer 25 includes a phosphor and / or a quantum dot, thereby achieving a desired color temperature (CCT).

The CRI represents the degree of change of the color of the object when the natural light (similar to black body radiation) having the same color temperature and the artificially produced illumination are irradiated to the same object, and the natural light, that is, the black body radiation, Indicating how close the illumination is to this. As the CRI approaches 100, the light emitting device implements white light close to natural light.

The CRI of the light output from the lighting device is increased by the fluorescent layer 25 so that white light close to natural light can be output. It is possible to output a high CRI light with a simple structure like the fluorescent layer 25, to reduce manufacturing cost compared with a high CRI light according to the package structure, to reduce defects that may occur in a packaging process, The manufacturing yield can be improved.

Further, the density and type of the fluorescent material and quantum dots of the fluorescent layer 25 can be controlled to control the color temperature, and light with a desired color temperature can be obtained with a simple method.

The support member 30 may be positioned at one end of the frame 10 and the reflective member 20. The support member 30 may be formed in a shape corresponding to one end of the reflective member 20. The support member 30 may be formed in a shape corresponding to one end of the frame 10. Since one end of the frame 10 and one end of the reflection member 20 are formed in a circular strip shape, the support member 30 may be formed in a circular strip shape.

The central region of the support member 30 may be open. The central region of the support member 30 may be open to have an outgoing area 50. That is, the light-outgoing region 50 can be defined by the circular band-like support member 30. [ The periphery of the light outgoing area 50 may be defined by the opening of the support member 30. [

The outgoing light region 50 may be formed in a circular shape. Although not shown, a light output sheet may be attached to the light outgoing area 50. The outgoing sheet can transmit all the light directed to the outgoing light area (50). The light-outgoing sheet can block foreign matter flowing into the interior of the lighting apparatus 1. [ It is possible to prevent the foreign matter introduced into the illumination device 1 from being blocked by the outgoing sheet so that the reflectance of the reflection member 20 is prevented from being lowered by the foreign matter.

Although not shown, a reflective sheet may be attached to the upper surface of the support member 30. [ The reflective sheet attached to the upper surface of the support member 30 may be the same sheet as the reflective member 20. [ Alternatively, the upper surface of the support member 30 may be coated with a reflective material.

The reflection sheet is attached to the upper surface of the support member 30 or the reflection material is applied to reflect the light directed toward the support member 30 toward the reflection member 20 so as to be emitted through the outgoing area 50 . As a result, the amount of light of the lighting device 10 increases, and the power consumption of the same amount of light can be reduced.

Although not shown, the support member 30 may further include a heat radiation member. Alternatively, the support member 30 may be formed of a material having high thermal conductivity to facilitate heat dissipation. The support member 30 may be formed of a metal material having high thermal conductivity. The heat dissipation capability of the support member 30 is improved, so that the heat in the illumination device 1 can be discharged to the outside, and damage to the internal structure due to heat can be prevented.

The support member 30 may include a first protruding region 31, a second protruding region 33, and a support region 35. The first protruding region 31 may protrude from the inside of the support member 30 toward the reflective upper surface 21. The second protruding region 33 may protrude from the outer side of the support member 30 toward the reflective upper surface 21.

The support region 35 may connect the first protruding region 31 and the second protruding region 33 with each other. That is, the first protruding region 31 and the second protruding region 33 may protrude from both sides of the support region 35 toward the reflective upper surface 21. The first protruding region 31, the second protruding region 33, and the supporting region 35 may be integrally formed. The support region 35 may support the light source 40.

The first protruding region 31 may be formed between the support region 35 and the outgoing region 50. The first protruding region 31 may be formed between the support region 35 and the outgoing region 50 to block light directly irradiated from the light source 40 to the outgoing region 50. That is, the first protruding area 31 prevents the light from the light source 40 from being emitted to the outgoing area 50 without reflection process by the reflective member 20, .

The first protruding region 31 and the second protruding region 33 are protruded from both sides of the support region 35 so that the flow of the frame 10 and the reflection member 20 in the horizontal direction . The first projecting region 31 and the second projecting region 33 can prevent the horizontal movement of the frame 10 and the reflecting member 20 to improve the stability of the lighting apparatus 1. [ There is an effect. In addition, the first and second protruding regions 31 and 33 can prevent the light source 40 from flowing in the horizontal direction, thereby improving the stability of the lighting apparatus 1. [

The light source (40) may be disposed on the support member (30). The light source 40 may be disposed on a support region 35 of the support member 30. The light source 40 may be arranged so as to correspond to the shape of the support member 30. The light source 40 may be disposed in a shape corresponding to one end of the reflective member 20. The light source 40 may be arranged in a circular band shape. The light source 40 may be arranged to surround the light-outgoing region 50. The light source 40 may be disposed in a closed loop shape surrounding the light outgoing area 50. The light source 40 may be disposed along the periphery of the outgoing light region 50.

The light source 40 may include a plurality of light emitting diodes 41 and a plurality of printed circuit boards 43.

The light emitting diode 41 may be a light emitting diode (LED) or an organic light emitting diode (OLED).

The light emitting diode 41 may be formed on the printed circuit board 43. The light emitting diode 41 may be attached to one surface of the printed circuit board 43. The light emitting diode 41 may be mounted on the printed circuit board 43. The light emitting diode 41 may be mounted on the printed circuit board 43 in the form of a package and the light emitting diode may be mounted on the printed circuit board 43 in the form of a chip on board (COB).

The plurality of light emitting diodes 41 may be arranged to correspond to the shape of the support member 30. The plurality of light emitting diodes 41 may be disposed in a shape corresponding to one end of the reflective member 20. The plurality of light emitting diodes 41 may be arranged in a circular band shape. The plurality of light emitting diodes 41 may be arranged to surround the light outgoing area 50. The plurality of light emitting diodes 41 may be disposed in a closed loop shape surrounding the outgoing light area 50. [ The plurality of light emitting diodes 41 may be disposed along the periphery of the light output region 50.

The plurality of light emitting diodes 41 may be formed on the plurality of printed circuit boards 43. A plurality of light emitting diodes 41 can be mounted on one printed circuit board 43. Each printed circuit board 43 on which the plurality of light emitting diodes 41 are mounted may be electrically connected to each other through a connection wiring 45.

The plurality of light emitting diodes 41 may receive power required for driving the light emitting diodes 41 through a power supply unit 60. The power supply unit 60 is connected to the printed circuit board 43 through a power supply line 61 to transmit power to the printed circuit board 43. The printed circuit board 43 receiving the power from the power supply unit 60 supplies power to the mounted LEDs 41 and supplies power to the adjacent printed circuit board 43 through the connection wiring 45. [ do. The adjacent printed circuit board 43 also supplies power to the mounted light emitting diode 41 and transfers power to the other printed circuit board 43 through the connection wiring 45. Then, power is applied to the plurality of light emitting diodes 41 so that all the light emitting diodes 41 emit light.

The power supply unit 60 may include an AC to DC converter (ADC) that converts AC to DC. The power supply unit 60 converts AC power from the outside into DC power and transmits the DC power to the printed circuit board 43. The power supply unit 60 may reduce the converted direct current power and transmit the reduced direct current power to the printed circuit board 43.

The power supply unit 60 may be located outside the lighting apparatus 1. [ Or the power supply unit 60 may be located inside the lighting apparatus 1. [ The power supply unit 60 may be mounted on at least one of the plurality of printed circuit boards 43 in the form of a chip although not shown in the figure when the power supply unit 60 is located inside the lighting apparatus 1.

If the power supply unit 60 includes only the ADC function, a separate DC-DC converter may be mounted on the printed circuit board 43. The DC-DC converter may convert the power supply voltage received from the power supply unit 60 to correspond to the driving voltage of the light emitting diode 41 and transmit the converted power supply voltage to the light emitting diode 41 and the adjacent printed circuit board 43 .

Since the power supply unit 60 is mounted on the printed circuit board 43, the lighting apparatus 1 can be operated and installed integrally without a separate power supply unit 60, which facilitates installation and transportation.

The printed circuit board 43 may include a metallic material. The printed circuit board 43 may be a metal PCB including a material such as Al and Cu. The printed circuit board 43 may be a FR1, FR4, or CEM1 PCB. The printed circuit board may include epoxy or phenol.

Also, the printed circuit board 43 may be a flexible printed circuit board that can be rotated by an external force.

The printed circuit board 43 may include a filling part 47 and a heat radiating part 49.

The filler 47 may be a region where the metal material is filled into a skeleton or a frame of the printed circuit board 43. The heat dissipation unit 49 may be a region where the metal material is not filled.

The heat dissipation unit 49 may be an empty space in which the metal material is not filled. The heat radiating portion 49 may be formed inside the printed circuit board 43. The heat radiating portion 49 may be formed along the side surface of the printed circuit board 43. The area of contact with the outside of the filling part 47 is widened through the heat dissipating part 49 so that the heat generated in the light emitting diode 41 and the printed circuit board 43 can easily escape to the outside have. Accordingly, there is an effect that the defects of the light emitting diode 41 and the printed circuit board 43 due to heat can be reduced.

The heat from the light emitting diode 41 is transmitted to the support member 30 through the printed circuit board 43 and the support member 30 having a high thermal conductivity discharges heat to the outside, The damage of the light emitting diode 41 and the printed circuit board 43 can be reduced.

The reflective upper surface 21 may have a constant width d and the reflective side 23 may have a constant height l. Table 1 is a table showing the light efficiency and the reduction rate according to the ratio of the height 1 of the reflective side 23 to the width d of the reflective upper surface 21.

Height (l, cm) The ratio of the width (d) to the height (l) Luminous efficiency (lm / W) Decrease (%) 3 4.3 96.44 17 4 3.3 97.33 16 5 2.6 98.10 15 6 2.2 97.57 16 7 1.9 95.88 17

The light efficiency shown in Table 1 represents the light flux relative to the applied power, and the reduction ratio represents the reduction rate of the light flux output to the light outgoing region 50 with respect to the light flux emitted by the light source 40.

When the reflective side 23 has a height l of 3 cm and the width d of the reflective upper side 21 is 1: 4.3 with respect to the height l of the reflective side 23, the light efficiency is 96.44 lm / W, and the reduction rate is 17%.

When the reflective side 23 has a height l of 4 cm and the width d of the reflective upper side 21 is 1: 3.3 with respect to the height l of the reflective side 23, the light efficiency is 97.33 lm / W, and the reduction rate is 16%.

When the reflective side 23 has a height l of 5 cm and the width d of the reflective upper side 21 is 1: 2.6 with respect to the height l of the reflective side 23, the light efficiency is 98.10 lm / W, and the reduction rate is 15%.

When the reflective side 23 has a height l of 6 cm and the width d of the reflective upper side 21 is 1: 2.2 relative to the height l of the reflective side 23, the light efficiency is 97.57 lm / W, and the reduction rate is 16%.

When the reflective side surface 23 has a height l of 7 cm and the width d of the reflective top surface 21 is 1: 1.9 with respect to the height l of the reflective side surface 23, the light efficiency is 95.88 lm / W, and the reduction rate is 17%.

The ratio of the height d of the reflective upper surface 21 to the height l of the reflective side 23 may be 1: 1.9 to 1: 4.3.

Preferably, the ratio of the height d of the reflective upper surface 21 to the height l of the reflective side 23 may be 1: 2 to 1: 4. When the height l of the reflecting side surface 23 and the width d of the reflecting top surface 21 have the above ratios, the light efficiency increases and the reduction rate decreases.

More preferably, when the ratio of the width d of the reflective upper surface 21 to the height l of the reflective side surface 23 is 1: 2.2 to 1: 3.3, the ratio is less than 1: 2.2 and more than 1: 3.3 Has a relatively high light efficiency, and has a relatively low reduction rate.

The reflective side 23 and the reflective upper side 21 are formed at a ratio of 1: 2.2 to 1: 3.3 in the ratio of the height d of the reflective side 23 to the width d of the reflective upper side 21 Thereby improving the light efficiency and reducing the power consumption of the lighting apparatus.

In addition, the height (1) of the reflecting side surface 23 may be 3 cm to 7 cm to improve the light efficiency. Preferably, the height (1) of the reflecting side surface 23 is set to 4 cm to 6 cm, so that the power consumption of the lighting apparatus can be reduced.

In addition, the reflective side surface 23 may be formed in a rectangular shape having a base-to-base contrast ratio of 10: 1 to 20: 3. The light efficiency can be improved by forming the height of the bottom side of the reflective side surface 23 at a ratio of 10: 1 to 20: 3.

By forming the reflecting member 20 in a cylindrical shape, the number of times of reflection of the light emitted from the light source 40 with respect to the conical shape can be reduced, so that the light efficiency can be improved as compared with the conical reflecting member.

7 is a view showing the path of light of the illumination device according to the first embodiment. FIG. 7A is a view showing the path of light of the illuminating device according to the comparative example, and FIG. 7B is a view showing the path of light of the illuminating device according to the first embodiment.

The illuminating device according to the comparative example in Fig. 7A shows when the reflecting member has a truncated cone shape, and the illuminating device according to the first embodiment of Fig. 7B shows when the reflecting member has a cylindrical shape.

The illumination device according to the first embodiment can have a smaller number of reflection times as compared with the comparative example. In the case of the illumination device according to the comparative example, the light from the light source is reflected several times on the side of the truncated cone having a truncated cone shape, and is output through the light exiting area by having the truncated cone shape. On the contrary, in the case of the illumination device according to the first embodiment, the reflecting member has a cylindrical shape, and has a side surface perpendicular to the light source, and is output to the outgoing light area through a small number of reflections compared to the comparative example.

Table 2 is a table showing the light efficiency and the reduction rate according to the size of the reflective member of the illumination device according to the comparative example.

Height (cm) Width ratio to height Luminous efficiency (lm / W) Decrease (%) 3 4.3 80.17 31 4 3.3 81.08 31 5 2.6 80.04 31 7 1.9 77.72 33

The height in Table 2 means the height of the reflecting member, and the reflecting member of the illuminating device according to the comparative example has a truncated cone shape with a side surface contrast ratio of 45 degrees.

When the reflective member of the comparative example has a height of 3 cm and the width of the lower surface of the reflective member is 1: 4.3, the light efficiency is 96.44 lm / W and the reduction rate is 31%.

When the reflective member of the comparative example has a height of 4 cm and the width of the lower surface of the reflective member is 1: 3.3, the light efficiency is 81.08 lm / W and the reduction rate is 31%.

When the reflective member of the comparative example has a height of 5 cm and the width of the lower surface of the reflective member is 1: 2.6, the light efficiency is 80.04 lm / W and the reduction rate is 31%.

When the reflective member of the comparative example has a height of 7 cm and the width of the lower surface of the reflective member is 1: 1.9, the light efficiency is 77.72 lm / W and the reduction rate is 33%.

Comparing Table 1 and Table 2, there is an effect that the light efficiency of the first embodiment is higher and the reduction rate is smaller than that of the comparative example, even if the reflective members are configured so as to have a ratio of the width to the same size and height. As described above, in the lighting apparatus according to the first embodiment, the number of times of reflection of the light emitted from the light source is smaller than that of the comparative example, so that the light consumption occurring upon reflection on the reflection member can be reduced, and the light efficiency can be improved.

8 is a cross-sectional view showing a lighting apparatus according to the second embodiment.

The illumination device according to the second embodiment differs from the first embodiment in the formation region of the fluorescent layer 25, and the remaining components are the same. Therefore, in explaining the second embodiment, detailed description of the configuration common to the first embodiment will be omitted.

Referring to Fig. 8, the illumination apparatus 101 according to the second embodiment may include a frame 110, a reflection member 120, and a support member 130. Fig.

The frame 110 may be formed in a cylindrical shape. The reflective member 120 may have a cylindrical shape.

The reflective member 120 may include a reflective upper surface 121 and reflective side surfaces 123. The reflective upper surface 121 may have a circular shape. The reflective side 123 may have a developed view in a rectangular shape. The reflective side surface 123 may have a rectangular shape.

A fluorescent layer 125 may be formed on a part of the reflective member 120. The fluorescent layer 125 may be formed on the reflective side 123. The fluorescent layer 125 may be formed on the inner surface of the reflective side 123. The fluorescent layer 125 may be formed on the front surface of the reflective side 123. The fluorescent layer 125 may have a shape corresponding to the reflecting side 123.

By forming the fluorescent layer 125 in the entire area of the reflective side surface 123, the ratio of the light incident on the fluorescent layer 125 among the light output from the light source 140 is increased, It is possible to output light of a uniform wavelength band.

9 is a bottom perspective view of the reflecting member according to the third embodiment.

The reflecting member according to the third embodiment differs from the first embodiment in the shape of the fluorescent layer, and the remaining components are the same. Therefore, in explaining the third embodiment, detailed description of the configuration common to the first embodiment will be omitted.

Referring to FIG. 9, the reflective member 220 according to the third embodiment may include a reflective upper surface 221 and a reflective side surface 223.

A plurality of fluorescent bands 225 may be formed on the reflective side 223. The plurality of fluorescent strips 225 may have a band shape. The fluorescent band 225 may be attached to the reflective side 223 or may be formed by applying a fluorescent material to the reflective side 223.

The fluorescent band 225 may be formed in a lower region of the reflective side 223. The fluorescent band 225 may be formed in a part of the reflective side surface 223 adjacent to the light source 40. The fluorescent band 225 may be formed in a lower region of the reflective side 223 spaced apart from the reflective upper side 221. The fluorescent band 225 may be spaced apart from the one end of the reflective side 223 adjacent to the light source 40 by a predetermined distance.

The fluorescent band 225 may be formed in a rectangular shape. The fluorescent band 225 may be formed in a rectangular shape. The fluorescent band 225 may be formed to have a predetermined distance from the adjacent fluorescent band. The fluorescent band 225 may have a constant height and a constant width.

The fluorescent band 225 may be formed to have a height of 8 mm to 16 mm. The fluorescent band 225 may have a width of 50 mm to 100 mm. The width and the height of the fluorescent band 225 may be formed to have a predetermined ratio. The ratio of the width to the height of the fluorescent band 225 may be 8:25 to 2:25. The adjacent fluorescent band 225 may have a separation distance of 10 mm to 15 mm.

The fluorescent band 225 may include an inorganic fluorescent material or an organic fluorescent material. The fluorescent band 225 may include a quantum dot.

Since the fluorescent layer is formed of a plurality of fluorescent bands 225, it is possible to output light with a high CRI, and it is possible to output light having a uniform wavelength.

10 is a cross-sectional view of a lighting apparatus according to a fourth embodiment.

The illumination device according to the fourth embodiment is the same as the first embodiment except that the auxiliary fluorescent layer is further formed. Therefore, in the description of the fourth embodiment, detailed description of the configuration common to the first embodiment will be omitted

Referring to Fig. 10, the illumination device 301 according to the fourth embodiment includes a reflection member 320. Fig. The reflective member 320 may include a reflective upper surface 321 and a reflective side surface 323.

A fluorescent layer 325 may be formed on a part of the reflective side 323. The fluorescent layer 325 may be attached to the reflective side 323 and the fluorescent material may be applied to the reflective side 323.

The illuminating device 1 may further include an auxiliary fluorescent layer 327. [ The auxiliary fluorescent layer 327 may be formed in a region adjacent to the light source 340. The auxiliary fluorescent layer 327 may be formed on the opposite side of the fluorescent layer 325 with respect to the light source 340. The auxiliary fluorescent layer 327 may be formed to face the fluorescent layer 325 with the light source 340 interposed therebetween. That is, the light source 340 may be positioned between the fluorescent layer 325 and the auxiliary fluorescent layer 327.

The auxiliary fluorescent layer 327 may have the same shape as the fluorescent layer 325. The auxiliary fluorescent layer 327 may have a size corresponding to the fluorescent layer 325. The auxiliary fluorescent layer 327 may have the same height as the fluorescent layer 325.

When the fluorescent layer 325 includes a plurality of fluorescent bands, the auxiliary fluorescent layer 327 may include a plurality of auxiliary fluorescent bands. The width and the separation distance of the auxiliary fluorescent layer 327 may correspond to the plurality of fluorescent bands. That is, the plurality of fluorescent bands 325 are arranged in a circular shape with respect to the center point of the outgoing region 50, and the plurality of auxiliary fluorescent bands are arranged in a circular shape with respect to the center point of the outgoing region 50 . The plurality of fluorescent bands (325) are arranged along a constant circumference, and the auxiliary fluorescent bands are also arranged along a certain circumference. The distance from the center point to the plurality of fluorescent bands (325) It is different from the distance. As a result, the circumferences where the plurality of fluorescent bands 325 are arranged vary in the circumferential direction in which the plurality of auxiliary fluorescent bands are arranged, and the width and the separation distance of the auxiliary fluorescent bands are determined so as to correspond to the ratio of the circumferential .

The auxiliary fluorescent layer 327 may be formed of the same material as the fluorescent layer 325.

The light output from the light source 340 is reflected by the fluorescent layer 325 and the auxiliary fluorescent layer 327 and is output, so that the CRI can be raised and output as homogeneous wavelength band light.

By providing the auxiliary fluorescent layer 327 as described above, even if a separate packaging process is omitted, light with a desired color temperature can be output, CRI can be increased, and uniform wavelength range light can be output . As a result, the manufacturing cost can be reduced, defects in the packaging process can be prevented, and the manufacturing yield can be improved.

The auxiliary phosphor layer 327 may be formed on the support member 330. The auxiliary phosphor layer 327 may be formed on the first protruding region 331 of the support member 330. The auxiliary fluorescent layer 327 may be attached to the first protruding region 331 or may be formed by coating the first protruding region 31 with a fluorescent material.

Fig. 11 is a view showing a socket frame in which a lighting device according to a fifth embodiment is fastened to a lighting device, and Fig. 12 is a view showing a lighting device according to the fifth embodiment.

The lighting apparatus according to the fifth embodiment is the same as the lighting apparatus according to the fifth embodiment except that a clip and a power source unit are attached. Therefore, in the description of the fifth embodiment, the detailed description of the components common to the first embodiment will be omitted.

Referring to Figs. 11 and 12, the lighting apparatus 401 according to the fifth embodiment can be inserted into the socket frame 490. Fig.

The socket frame 490 may be inserted and fixed to the ceiling of the building. The lighting device 401 may be inserted into the socket frame 490.

The illumination device 401 may include a frame 410 and a support member 430. A power supply part 460 may be attached to the outside of the frame 410. The power supply unit 460 may transmit DC power to the printed circuit board.

The power supply unit 460 may be located on the outer upper surface of the frame 410. The power supply unit 460 may be electrically connected to the printed circuit board through wiring. The power supply unit 460 can be installed outside the upper surface of the frame 410 having the space between the socket frames 490 so that the power supply unit 460 can be installed without a separate space.

A clip 481 may be attached to the side surface of the lighting device 401. The clip 481 may be attached to the support member 430. The clip 481 may be attached to the outside of the second projection of the support member 430. The clip 481 may extend from the support member 430 to the upper side of the frame 410.

One end of the clip 481 extending upward from the frame 410 may be bent in the direction of the frame 410. One end of the clip 481 is bent in the direction of the frame 410 so that the lighting device 401 including the clip 481 can be easily inserted into the socket frame 490. [

The clip 481 may have a tension in a direction opposite to the frame 410. The clip 481 has a tension in a direction opposite to the frame 410 so that when the lighting device 401 is inserted into the socket frame 490, 401 and the socket frame 490 can be fixed.

13 is a view showing a lighting apparatus according to the sixth embodiment.

The illumination device according to the sixth embodiment is the same as the fifth embodiment, except that the auxiliary clip is further attached. Therefore, in the description of the sixth embodiment, the detailed description of the configuration common to the fifth embodiment will be omitted.

Referring to Fig. 13, the lighting apparatus 501 according to the sixth embodiment can be inserted into the socket frame 490 of Fig.

The illumination device 501 may include a frame 510 and a support member 530. A power supply unit 560 may be attached to the outside of the frame 510. The power supply unit 560 may transmit DC power to the printed circuit board.

The power supply unit 560 may be located on the outer upper surface of the frame 510. The power supply unit 560 may be electrically connected to the printed circuit board through wiring. The power source unit 560 can be installed outside the upper surface of the frame 510 having the space between the socket frames 490 so that the power source unit 560 can be installed without a separate space.

A clip 581 may be attached to the side surface of the lighting device 501. The clip 581 may be attached to the support member 530. The clip 581 may be attached to the outside of the second projection of the support member 530. The clip 581 may extend from the support member 530 to a portion of the side surface of the frame 510.

The clip 581 may have a tension in a direction opposite to the frame 510. The clip 581 has a tension in a direction opposite to the frame 510 so that when the lighting device 501 is inserted into the socket frame 490, 501 and the socket frame 490 can be fixed.

An auxiliary clip 583 may be attached to the outer upper surface of the frame 510. One side region of the auxiliary clip 583 may be fixed to the outer upper surface of the frame 510. The auxiliary clip 583 may extend from the upper surface of the frame 510 to the side of the frame 510. That is, one side of the auxiliary clip 583 is fixed to the upper surface of the frame 510, and the other side of the auxiliary clip 583 extends to the side of the frame 510. The auxiliary clip 583 may have a bent structure.

The other side of the auxiliary clip 583 may have a tension in a direction opposite to the frame 510. The auxiliary clip 583 has a tension in a direction opposite to the frame 510 so that when the lighting device 501 is inserted into the socket frame 590, The apparatus 501 can be fixed to the socket frame 490. [

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It will be apparent to those skilled in the art that changes or modifications may fall within the scope of the appended claims.

1,101,301: Lighting devices
10, 110,
20, 120, 220, 320:
21, 121, 321:
23,123,223,323: reflective side
25, 125, 325:
30, 130, 330:
31, 331: first protruding region
33,333: second protruding area
35: Support area
40,140,340: Light source
41, 141, 341: light emitting diodes
43,143,343: printed circuit board
45: Connection wiring
50: Exposure area
225: Fluorescent band
327: auxiliary fluorescent layer

Claims

A light source for emitting light;
A reflecting member for reflecting the light from the light source to an outgoing light area;
A fluorescent layer formed on a part of the reflective member; And
And a support member for supporting the light source,
Wherein the reflective member includes a reflective upper side facing the light source and a rectangular reflective side,
Wherein the fluorescent layer is formed on the reflective side,
Wherein the support member includes a first protruding region protruding in the direction of the reflective upper surface and a second protruding region spaced apart from the first protruding region,
One end of the reflecting member is supported by a supporting region between the first projecting region and the second projecting region,
Wherein the light source is located on the support region between one end of the reflective member supported by the support region and the first projected region,
One end of the reflecting member is located between the light source and the second projecting region,
The ratio of the height of the reflective side to the width of the reflective upper side is 2.2: 1 to 3.3: 1,
Wherein the fluorescent layer is formed to have a constant height in a part of the reflective side surface adjacent to the support member.

The method according to claim 1,
Wherein the fluorescent layer is formed on a portion of the reflective side adjacent to the light source.

delete

The method according to claim 1,
Wherein the reflective side has a rectangular shape with a height ratio of 10: 1 to 20: 3 with respect to the bottom surface.

The method according to claim 1,
Wherein a lower surface of the developed view of the reflective side has a planar shape.

The method according to claim 1,
Wherein the fluorescent layer comprises a plurality of fluorescent strips spaced apart from each other.

9. The method of claim 8,
Wherein the fluorescent strip has a constant distance.

The method according to claim 1,
And an auxiliary fluorescent layer facing the fluorescent layer with the light source interposed therebetween.

11. The method of claim 10,
Wherein the auxiliary fluorescent layer has a height corresponding to the fluorescent layer.

11. The method of claim 10,
Wherein the auxiliary phosphor layer is applied to the first projecting region of the support member.

11. The method of claim 10,
Wherein the auxiliary fluorescent layer is formed of the same material as the fluorescent layer.

The method according to claim 1,
Wherein the fluorescent layer includes a phosphor capable of generating excitation light having a wavelength different from the visible light region generated in the light source.

The method according to claim 1,
Wherein the fluorescent layer comprises a quantum dot.

The method according to claim 1,
And a clip located on an outer surface of the support member.

The method according to claim 1,
A frame surrounding the reflective member; And
And an auxiliary clip mounted on an upper surface of the frame.

A light source for emitting light;
A cylindrical reflecting member for reflecting light from the light source to an outgoing light area;
A fluorescent layer formed on a part of the reflective member; And
And a support member for supporting the light source,
Wherein the support member includes a first protruding region protruding in a direction opposite to an outgoing direction of light output to the outgoing light region and a second protruding region spaced apart from the first protruding region,
One end of the reflecting member is supported by a supporting region between the first projecting region and the second projecting region,
Wherein the light source is located on the support region between one end of the reflective member supported by the support region and the first projected region,
One end of the reflecting member is located between the light source and the second projecting region,
Wherein the reflective member includes a reflective upper side facing the light source and a rectangular reflective side,
The ratio of the height of the reflective side to the width of the reflective upper side is 2.2: 1 to 3.3: 1,
Wherein the fluorescent layer is formed to have a constant height in a part of the reflective side surface adjacent to the support member.

delete

19. The method of claim 18,
And an auxiliary fluorescent layer facing the fluorescent layer with the light source therebetween.

19. The method of claim 18,
Wherein the fluorescent layer includes a phosphor capable of generating excitation light having a wavelength different from the visible light region generated in the light source.