WO2010030100A2

WO2010030100A2 - Tube-type led lights

Info

Publication number: WO2010030100A2
Application number: PCT/KR2009/005041
Authority: WO
Inventors: 김혜용; 정봉문
Original assignee: 지엘레페주식회사
Priority date: 2008-09-09
Filing date: 2009-09-07
Publication date: 2010-03-18
Also published as: WO2010030100A3; KR100910658B1

Abstract

The present invention relates to a tube-type LED light having a tube-shaped, transparent light-emitting tube installed with a fluorescent board for changing the colours of the light and a light distributor and/or a phosphor for changing the colour of the light on the upper surface of the socket-shaped LED module board, so that even if the LED only emits light from one side, light is emitted evenly in all directions. Using the present invention, white or yellow light can be obtained simply and at low cost from long-life, high-brightness blue, violet or ultraviolet LEDs, even without the use of high-priced, bright white LEDs. «Said tube-type LED light is characterised in comprising a circuit board equipped with a plurality of LEDs or LED chips exposed in dot shapes, and an LED module board in a socket shape comprising a socket base with said built-in circuit board; a cylindrical light-emitting board for changing the colours of the light, attached in such a way as to cover the plurality of LEDs or LED chips on the upper part of said socket base from above and to change the colour of the light they emit; and a transparent, cylindrical light-emitting tube to change the colour of the light, already changed in the cylindrical light-emitting board, emitted to the outside.

Description

Tube type LED lighting

The present invention relates to a tube type LED (Light Emitting Diode) light, and more particularly, to an illumination color conversion in which an illumination color conversion phosphor and / or an optical diffuser are mixed on an upper side of a socket type LED module plate. By installing a tube-shaped transparent light emitting tube having a fluorescent plate for emitting light, even if the LED is emitted from only one side, it can emit light evenly in all directions of the tube-shaped transparent light emitting tube, and it has a long life and high luminance without using expensive high-brightness white LEDs. In addition to simple and inexpensive lighting white to yellowish white light from a blue LED, a purple LED, or an ultraviolet LED, the need for strictly uniform distribution or coating of the phosphor for light color conversion by scattering by light diffusers. And relieves glare caused by high-brightness LED lighting, making it more gentle and comfortable You can get a person relates to the tube type LED lighting.

LED is a kind of semiconductor device that converts electrical energy into light energy by using the characteristics of a semiconductor made of a specific compound. It has very low power consumption due to high light conversion efficiency, and is small in size, thin and Suitable for light weight, yet infinitely scalable installation, very long lifetime semi-permanently (approximately 100,000 hours for blue, purple, or UV LEDs, approximately 30,000 hours for white LEDs), no thermal or discharge light emission Very fast response speed with no preheating, very simple lighting circuit, no discharge gas and filament, high impact resistance, safe and low environmental pollution, high repetition pulse operation It has the advantage of less fatigue of the optic nerve and full color. Light source for liquid crystal display (LCD) back light, such as digital cameras and personal digital assistants (PDAs), signal lamps, electronic signs, vehicle headlights and taillights, various electronic devices, office equipment, fax machines, etc. It is widely used for night light of remote control or surveillance camera, infrared communication, information display of outdoor billboard by various combination of red and green pixels, high precision electronic display, high quality indoor and outdoor lighting. As the high-brightness LED that improves the low-brightness problem, which was a problem, is commercially available on a commercial scale, its use and use are rapidly expanding.

In particular, since white LEDs are very useful for liquid crystal display (LCD) back light sources and indoor / outdoor lighting, the use frequency is rapidly increasing, and the lighting market does not last as long as the trend of ousting incandescent bulbs by fluorescent lamps. It is expected to be.

The method for obtaining white light by the LED is as follows.

First, there is a method of obtaining white light by combining three LEDs of red, green, and blue as a classical method. However, the manufacturing cost is high and the driving circuit is complicated, which increases the size of the product and the temperature characteristics of the three LEDs are different. Because of its inferior optical properties and reliability, it is rarely used at present.

Therefore, in recent years, a white LED is adopted as a single LED that generates white light, and the surface of the white LED is coated with a phosphor, or the periphery or lens is mixed and molded, and a single LED having a specific wavelength is produced. A method is used in which the excited light excites the phosphor to produce light of different wavelengths, which is mixed with the light produced by the single LED chip to obtain white light.

However, this conventional method uses a method of coating a phosphor directly on the surface of a blue, purple, or ultraviolet LED, or by mixing and molding a phosphor in a peripheral portion or a lens portion thereof. There is a problem that the life of the LED is significantly shortened to about one third or less. In particular, there is a problem that the emission color becomes uneven if a very homogeneous coating or dispersion distribution of the phosphor is not achieved. There is a serious problem that it is quite difficult to achieve.

The oldest type of white LED widely used is coated or molded with a yellow phosphor (typically yttrium-aluminum-garnet: Y3Al5O12: Ce, YAG-based compound) on an InGaN-based blue LED having a wavelength of 450 nm. Blue light excites the YAG yellow phosphor and complements the short wavelength region of blue light having a narrow peak of the blue LED and yellow light having a wide peak by the YAG-based yellow phosphor to the human eye. This technique, which is recognized as white light, is disclosed in US Pat. No. 5,998,925 to Nichia.

However, this white light is a mixture of two wavelengths of light that are not completely complementary and only holds a part of the spectrum of visible light. Therefore, the color rendering property is about 60-75 and cannot be recognized as white light close to natural light. While not very satisfactory, the blue LED exhibits the highest efficiency for an excitation light source of about 405 nm, while the YAG phosphor is excited by blue light of 450 to 460 nm, which causes a problem of low luminance, particularly for coating or molding YAG phosphors. Since it is difficult to guarantee homogeneous and uniform dispersibility, the uniformity and reproducibility of the product is low in the luminance and spectral distribution of white light, and the LED life is significantly shortened.

In addition, in the LED lighting using a conventional LED, using a dot-type LED module plate of the matrix form using a constant dispersion, there was a difficulty in having a high uniformity and reproducibility of the product.

In addition, in the case of a tube-shaped transparent light emitting tube (glass tube) on the upper side of the socket-shaped LED module plate, a large number of LEDs emit only upwards, so that it is difficult to have uniform illumination intensity in all directions of the transparent light emitting tube. there was.

Accordingly, it is an object of the present invention to provide a tube-type LED lamp that can emit a single color long with uniform illumination intensity in all directions of the tube-shaped transparent light emitting tube even if a plurality of LEDs are emitted from only one side.

Another object of the present invention is to provide a long life (approximately 100,000 hours life) of high brightness blue LEDs or purple LEDs or optionally ultraviolet LEDs without using conventional high brightness white LEDs having relatively short lifespan (approximately 30,000 hours of service life). It is to provide a tube-type LED lighting lamp that can significantly increase the life of the white light emitting LED lighting device by simply and easily obtain the white light to yellow-white light for illumination.

Still another object of the present invention is to provide a user or a builder who is not a producer to easily adjust the white light to a desired intensity easily and at low cost, or to use a relatively low-cost blue LED, purple LED, or ultraviolet LED instead of the existing expensive high-brightness white LED. It is to provide a tube-type LED lamp that can obtain a gentle white light using.

It is still another object of the present invention to provide a tube type LED lighting lamp that can effectively and easily eliminate the concern of occurrence of uneven distribution of light emission color due to uneven distribution or coating of illumination color conversion phosphor.

Still another object of the present invention is to provide a tube type LED lighting lamp that effectively alleviates the glare caused by high-brightness white LED lighting to obtain a milder and more comfortable lighting, and to reduce the deterioration of lighting equipment due to its excellent heat resistance. will be.

In order to achieve the above object, the tube type LED lighting according to the present invention, a circuit board is mounted so that a plurality of LEDs or LED chip is exposed in the form of a dot (dot) to emit light, and the socket on which the circuit board is embedded An LED module plate in the form of a socket comprising a base; A fluorescent plate for converting an illumination color of a cylindrical shape coupled to cover the plurality of LEDs or LED chips from the upper portion of the socket base, and converting the emission colors emitted from the plurality of LEDs or LED chips; The cylindrical shape is characterized in that consisting of a transparent light emitting tube of the cylindrical shape for emitting light emitted by the conversion is converted in the fluorescent plate for illumination color conversion.

Here, the circuit board on which the plurality of LEDs or LED chips are mounted on an upper surface thereof may have a convex shape of right and left.

In addition, the circuit board may be mounted in a rod shape in an upward direction perpendicular to the center of the socket base, and the plurality of LEDs or LED chips may be arranged in dot shapes on both sides of the rod-shaped circuit board.

In addition, at the center of the circuit board is further provided with a reflecting plate having a cross-sectional inverted trapezoidal shape that is mounted in a vertical direction and the light emitted upward from the plurality of LEDs or LED chip evenly toward the side of the transparent light emitting tube It is desirable to allow reflection.

In addition, it is preferable that the upper vertical portion of the socket base protrudes from the cylindrical vertical toothed portion having the toothed portion formed therein so as to be engaged with the toothed portion formed on the lower outer surface of the cylindrical transparent light emitting tube.

In addition, the transparent light emitting tube may be any one of a straight tube, a curved tube and a sphere.

In addition, the illumination color conversion fluorescent plate is preferably a homogeneous dispersion of the illumination color conversion phosphor, light diffuser and pigment in a matrix resin.

In addition, the light emitting tube may be formed by applying a light diffuser or a phosphor.

According to the tube-type LED lighting according to the present invention configured as described above, the tube-shaped transparent having an illumination color conversion phosphor incorporating the illumination color conversion phosphor and / or optical diffuser on the upper side of the socket-shaped LED module plate By installing the light emitting tube, even if the LED is emitted from only one side, it can emit light evenly in all directions of the tube-shaped transparent light emitting tube, and long-life high-brightness blue LED, purple LED, or ultraviolet LED without using expensive high-brightness white LED It is possible to easily and inexpensively obtain white or yellowish white light for lighting, and there is no need to strictly distribute or coat the phosphor for light color conversion by the scattering effect of the light diffuser. Effectively alleviates glare, resulting in warmer and more comfortable lighting There are effective.

1 is a schematic cross-sectional view of a tube-type LED lamp according to a first embodiment of the present invention.

FIG. 2 is an enlarged schematic view of a fluorescent sheet or film for converting illumination color of a tube shape applied to FIG. 1.

3 is a schematic cross-sectional view of a tube-type LED lamp according to a second embodiment of the present invention.

4 is a schematic cross-sectional view of a tube-type LED lamp according to a third embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention.

FIG. 1 is a schematic cross-sectional view of a tube type LED lamp according to a first embodiment of the present invention, and FIG. 2 is an enlarged schematic view of a fluorescent sheet or film for converting a tube-shaped illumination color applied to FIG. 1.

As shown, the tube-type LED lamp 1 according to the first embodiment of the present invention, the plurality of LEDs or LED chip 13 is mounted so that the upper portion (dot) is exposed to the top to emit light upwards LED module plate 10 of the socket form that is; A reflector 50 for laterally reflecting light emitted from the LED or the LED chip 13; A fluorescent plate 20 for converting an illumination color of a tube shape covering the LED or the LED chip 13 and the reflecting plate 50 from the top; It includes a transparent light emitting tube 30 of the cylindrical shape for emitting the light emitted by the conversion in the tube-shaped illumination color conversion fluorescent plate to the outside.

The socket-shaped LED module plate 10 includes a circuit board 12 on which a plurality of LEDs or LED chips 13 are mounted in a matrix type on a top surface thereof, and a socket base on which the circuit board 12 is embedded. 11).

Here, the socket base 11 has a structure similar to that of a socket of a general incandescent bulb, and has a structure in which a circuit board 12 is embedded and electrically connected to an open upper portion. Of course, although not shown, a power connection connector or a heat sink for dissipating heat may be provided.

In addition, a cylindrical vertical toothed portion 11-1 having a toothed portion formed therein is protruded from an upper outer portion of the socket base 11 to form a toothed portion formed on a lower outer peripheral surface of the cylindrical transparent light emitting tube 30. And screw it together.

The LEDs or LED chips 13 mounted on the upper surface of the circuit board 12 in a matrix form emit light in a plane direction. The LED or the LED chip 13 may be formed of a blue LED, a purple LED, an ultraviolet LED, a white LED, or a combination thereof, and appropriate illumination color conversion according to the present invention regardless of a predetermined color tone. The fluorescent plate 20 can easily and easily convert the emission color.

The reflecting plate 50 has a structure mounted in an inverted trapezoidal shape (cross-sectional shape of the upper and lower straits) in a direction perpendicular to the center of the circuit board 12. In this way, since the inverted trapezoidal shape is formed vertically, the circumference of the reflecting plate 50 is gradually inclined toward the lower side is formed inclined surface (50-1) to emit light from the LED or LED chip 13 to the side to the side By reflecting the light can be evenly emitted to the entire side of the cylindrical transparent light emitting tube 30. Of course, even if the light of the LED or LED chip 13 which is vertically emitted without being reflected by the inclined surface 50-1 of the reflecting plate 50 is emitted only to the upper side of the transparent light emitting tube 30, it is evenly distributed in all directions except for the lower part. It can emit light.

In addition, the transparent light emitting tube 30 for emitting the light to the outside is a substantially cylindrical (tube-shaped) with an open bottom, the tooth (not shown) formed on the lower outer peripheral surface of the cylindrical vertical of the socket base 11 It meshes with the toothed part 11-1, and is screwed together.

The material of the transparent light emitting tube 30 is preferably a transparent material such as acrylic, glass or PVC, but the material is not limited thereto.

In the illustrated example, the transparent light emitting tube 30 has a cylindrical shape in the form of a tube. However, the transparent light emitting tube 30 may be applied to various shapes such as a straight line, a bent or a spherical shape.

Here, the light emitting tube 30 may be formed integrally by applying a light diffuser or phosphor (powder or sheet) described later.

The above-described illumination color conversion fluorescent plate 20 is supported in the form of a cylindrical film or sheet to be fitted inside the cylindrical transparent light emitting tube 30 by the cylindrical protective film 40.

In addition, the illumination plate 20 for converting the illumination color is formed in a sheet or film form in the shape of a substantially cylindrical tube (see FIG. 2), and is sandwiched between the transparent light emitting tube 30 and the protective film 40. Is coupled on the base 11.

That is, in the illumination plate 20 for illuminating color conversion, the phosphor 20b, the light diffuser (bead) 20c, and the pigment 20d are homogeneously dispersed in the matrix resin 20a.

Here, in the illustrated example, the phosphor 20b, the light diffuser (bead) 20c, and the pigment 20d are uniformly dispersed in the matrix resin 20a in the fluorescent plate 20 for illumination color conversion. Although shown, only one of the phosphor 20b and the light diffuser 20d is homogeneously dispersed, and the other may be formed by applying a powder or sheet to the transparent light emitting tube 30. That is, the transparent light emitting tube 30 itself may provide the function of the fluorescent plate and the light diffuser by applying the phosphor or the light diffuser.

As can be seen from Figure 2, the cylindrical illumination color conversion fluorescent plate 20, the light emitting LED itself is applied independently to the LED lighting without touching the light emitting color of the LED blue, purple, ultraviolet ( The light reflected laterally through the reflecting plate 50 and the light traveling straight upward without passing through the reflecting plate 50) can be switched from white light to yellow-white light, and the light diffuser (bead) 20c Scattering enables the phosphor 20b of the illumination plate 20 for illumination color conversion to perform sufficient light emission color conversion, so that a strictly homogeneous distribution of the phosphors is not a problem, and the high brightness of the LED when directly looking at the light source This can significantly reduce or alleviate eye sting and fatigue.

Also, if necessary, although not shown, one side of the cylindrical illumination color conversion fluorescent plate 20 (the protective film 40 side), for example, allows light having a wavelength of 500 nm or less and reflects light having a wavelength longer than that. Cylindrical dichroic filters having a refractive index of 1.4 to 1.6 may be placed. The dichroic filter contributes to the stabilization of the light emitting module by forming a dielectric layer such as neodymium or holmium on the upper surface of the phosphor, thereby reducing the damage of the LED device due to backscattering of the light by the phosphor. It is also possible to increase the service life of the.

As the matrix resin 20a, those having excellent transparency and heat resistance may be preferably used. If the transparency and heat resistance are good, there is no particular limitation in the present invention. However, as the preferable heat resistant transparent matrix resin, silicone resin and polymethyl Pentene (polymethyl pentene) resin, polyether sulfon resin, polyether imide resin, polyarylate resin, or polymethyl methacylate resin, The amount of these matrix resins added is in the range of 50 to 99% by weight, preferably 82 to 97% by weight, based on the total weight of the composition.

When the content of these heat-resistant transparent matrix resin is less than 50% by weight based on the total weight of the composition, transparency may be inferior, and the luminance may be excessively lowered due to the halo effect caused by scattering. In this case, there is a concern that the light color change effect is insufficient or the degree of alleviation of the glare due to high brightness is insufficient.

All of the above-mentioned resins are those known in the art as heat-resistant transparent resins, so the description thereof will be omitted.

On the other hand, as the phosphor 20b for illumination color conversion into white light applicable to the present invention, when using a blue LED, only a YAG-based yellow phosphor known in the art may be used, but it is preferable to use a green phosphor and a red phosphor. It is preferable at the point which can obtain three wavelengths of natural white light, and when using a purple LED or an ultraviolet LED, it is preferable to use a green fluorescent substance, a red fluorescent substance, and a blue fluorescent substance for the same reason.

The white LED obtained when using a blue LED and a YAG yellow phosphor is typically (YGd) 3 Al 5 O 12: Ce developed by Nichia, and the above-mentioned YAG yellow phosphor is excited at 550 to 560 nm.

On the other hand, when using the blue LED (425 nm to 475 nm wavelength region) and the green phosphor and the red phosphor and blue phosphor, the present invention is not limited thereto, but various ones known in the art can be used 430 nm to 480 nm Examples of red phosphors that can be excited in the wavelength range of include Y2O2S: Eu, Gd, Li2TiO3: Mn, LiAlO2: Mn, 6MgO · As2O5: Mn4 +, or 3.5MgO.0.5MgF2.GeO2: Mn4 +, and 515 nm-. Examples of green phosphors that can be excited in the wavelength region of 520 nm include ZnS: Cu, Al, Ca2MgSi2O7: Cl, Y3 (GaxAl1-x) 5O12: Ce (0 <x <1), La2O3.11Al2O3: Mn, Ca8Mg (SiO4 ) 4Cl2: Eu, Mn.

A three-wavelength white LED using a blue LED and red and green phosphors excites a mixture of red and green phosphors to produce red and green light mixed with the blue light of the blue LED chip to emit three wavelength white light.

In addition, the red and green phosphors that can be excited by the blue LEDs described above are stable in oxide form and have an extended lifetime.

In the present invention, the above-mentioned green phosphor and red phosphor are mixed at an appropriate ratio and directly coated directly or indirectly on a blue LED chip to obtain 3-wavelength white light, and are mounted as a separate member thereof without being directly related to the LED. It is to be noted that 3-wavelength white light is obtained by forming a film or sheet of the fluorescent plate 20 for illumination color conversion.

Among the red and green phosphors, the red phosphor is preferably Li 2 TiO 3: Mn when the emission peak wavelength is about 659 nm, and when the emission peak wavelength is about 670 nm, LiAlO 2: Mn is preferable and the emission peak wavelength is about 650 nm. In the case of nm, 6MgO.As2O5: Mn4 + is preferable, and in the case where the emission peak wavelength is about 650 nm, 3.5MgO.0.5MgF2.GeO2: Mn4 + is preferable.

Among the red and green phosphors described above, the green phosphor is preferably La 2 O 3 · 11Al 2 O 3: Mn when the emission peak wavelength is about 520 nm, and Y 3 (GaxAl 1-x) 5 O 12: Ce (0) when the emission peak wavelength is about 516 nm. <x <1) is preferred, and Ca8Mg (SiO4) 4Cl2: Eu, Mn is preferred when the emission peak wavelength is about 515 nm.

The green phosphor and the red phosphor may be mixed in various ratios and may form an intermediate color LED such as pink or blue white. Meanwhile, the blue LED chip may be InGaN type, SiC type or ZnSe type.

On the other hand, in the case of the purple LED or the ultraviolet LED, in addition to the green phosphor and the red phosphor, BaMgAl 10 O 17 or (Sr, Ca, BaMg) 10 (PO 4) 6 Cl 2: Eu may be used as the blue phosphor.

By appropriate combination of the red, blue and green phosphors described above, white light or light of various colors or various light having different color temperatures can be obtained.

It is a matter of course that the white light obtained can be appropriately adjusted within the range of 3200 to 7500K according to the needs of the consumer by appropriate combination of red, blue and green phosphors.

The content of the red phosphor, the blue phosphor, the green phosphor, or a combination thereof is 0.8 to 30% by weight, preferably 2.0 to 15% by weight, based on the total weight of the composition, and red phosphor and green phosphor may be used for the blue LED. In this case, the weight ratio is 1: 0.2 to 1.2, preferably 1: 0.3 to 0.8, and the weight ratio when using the red phosphor, the blue phosphor, and the green phosphor with respect to the purple LED or the ultraviolet LED is also 1. : 0.2 to 1.2: 0.2 to 1.2, preferably 1: 0.3 to 0.8: 0.3 to 0.8.

When the content of the phosphor is less than 0.8 wt% based on the total weight of the composition, satisfactory white light may not be obtained. On the contrary, when the content of the phosphor exceeds 30 wt%, the luminance may be excessively lowered.

On the other hand, examples of the light diffuser 20c to be added include a silicone resin (refractive index of 1.43), polyacrylate (refractive index of 1.49), polyurethane (refractive index of 1.51), polyethylene (polyethylene: of refractive index 1.54) , Homopolymers such as polypropylene (refractive index 1.46), nylon (Nylon: refractive index 1.54), polystyrene (polystyrene: 1.59), polymethylmethacrylate (refractive index 1.49), polycarbonate (polycarbonate: 1.59) Organic light diffusing agents such as copolymers of monomers thereof; Silica (refractive index 1.47), alumina (refractive index 1.50 to 1.56), glass (glass: refractive index 1.51), calcium carbonate (CaCO3: refractive index 1.51), talc (talc: refractive index 1.56), mica (mica: 1.56) Inorganic light diffusing agents such as barium sulfate (BaSO 4: refractive index 1.63), zinc oxide (ZnO: refractive index 2.03), cesium oxide (CeO 2: refractive index 2.15), titanium dioxide (TiO 2: refractive index 2.50 to 2.71), iron oxide (2.90), Or any mixture thereof, but preferred is an organic light diffusing agent, most preferred is polymethylmethacrylate in terms of high transparency, and by appropriate light diffusion intended not to add the same kind as the matrix resin. This is necessary in terms of ensuring sufficient excitation of the phosphor.

The light diffuser 20c has an average particle diameter of 0.2 to 30 µm, preferably 0.5 to 5 µm, and specifically 1.0 to 3.5 µm, and the amount of the light diffuser 20c is 0.2 to 20 wt% based on the total weight of the composition, Preferably it is 0.5-10 weight%, Specifically, 1.0-3.0 weight%.

If the average particle diameter of the light diffuser 20c is less than 0.2 µm, the transparency or light transmittance may be inferior. In contrast, if the average diameter of the light diffuser 20c exceeds 30 µm, the excitation of the phosphor may be insufficient or uneven. Likewise not preferred.

If the amount of the light diffuser 20c added to the entire composition is less than 0.2% by weight, the excitation of the phosphor may be insufficient or uneven, which is not preferable. It is not preferable because there is a possibility of doing so.

In addition, rarely, inorganic or organic pigments may be included in an amount of 0.1 to 3.0% by weight, preferably 0.1 to 1.0% by weight, depending on the degree of preference such as illumination color.In view of transparency, organic pigments are preferable. Pigments, azo pigments, indanthrene pigments, thioindigo pigments, perylene pigments, dioxazine pigments, quinatridone pigments, phthalocyanine pigments, quinophthalone pigments can be used a variety of known. For example, yellow pigments that give a warm feeling include monoazo, diazo, naphthalazobenzene, yellow wall, rhubarb or any mixed pigments thereof, but these are optional in the present invention.

As shown in FIG. 3, the tube-type LED lamp 100 according to the second embodiment of the present invention does not separately form a reflector plate 50 (see FIG. 1), and includes a plurality of LEDs or LED chips 113. Substantially the same as the tube type LED lamp 1 according to the first embodiment of the present invention shown in FIG. 1 except that the circuit board 112 mounted on the upper surface is formed in a convex shape of right and left homogeneous shapes. Do.

That is, since a plurality of LEDs or LED chips 113 are formed on the convex circuit board 112 spaced apart from each other, the light emitted is evenly emitted to the side without emitting vertically upwards. Through the fluorescent plate 120 for conversion, it is possible to emit light evenly in all directions except for the lower portion of the transparent light emitting tube 230.

As shown in FIG. 4, the tube type LED lighting lamp 200 according to the third embodiment of the present invention does not separately form a reflecting plate 50 (see FIG. 1), and has a rod-shaped printed circuit board in place. Except that the 212 is formed vertically, it is substantially the same as the tube type LED lamp 1 according to the first embodiment of the present invention shown in FIG.

That is, the rod-shaped circuit board 212 is mounted in an upward direction perpendicular to the center of the socket base 211, and a plurality of LEDs or LED chips 213 are provided on both sides of the rod-shaped circuit board 212. They are arranged in a matrix (dot) and electrically connected. Accordingly, the light emitted by the plurality of LEDs or the LED chips 213 are horizontal to emit light evenly around the side of the transparent light emitting tube 230 through the cylindrical illumination color conversion fluorescent plate 220. It becomes possible.

Although the present invention has been described in detail with reference to preferred embodiments according to the present invention, this is only for illustrating the present invention and is not intended to limit the present invention, and those skilled in the art can make various changes and modifications without departing from the scope of the present invention. It should be noted that this is possible as well as this is also within the scope of the present invention.

The present invention can emit light evenly in all directions of the tube-shaped transparent light emitting tube even if the LED is emitted from only one side, and is simple from long-life high-brightness blue LED, purple LED or ultraviolet LED without using expensive high-brightness white LED. The present invention also relates to an improved tube type LED luminaire that can be used industrially to obtain inexpensive white to yellowish white light.

Claims

A circuit board on which a plurality of LEDs or LED chips are exposed in a dot shape and mounted to emit light, a socket-shaped LED module plate comprising a socket base on which the circuit board is embedded,

A fluorescent plate for converting an illumination color of a cylindrical shape coupled to cover the plurality of LEDs or LED chips from the upper part of the socket base and converting the emission colors emitted from the plurality of LEDs or LED chips;

Tube-shaped LED lighting lamp, characterized in that consisting of a cylindrical transparent light emitting tube for emitting light emitted by being converted from the fluorescent plate for illumination color conversion of the cylindrical shape to the outside.
The method of claim 1,

And the circuit board on which the plurality of LEDs or LED chips are mounted on an upper surface thereof has a convex shape of right and left homogeneous shapes.
The method of claim 1,

The circuit board is mounted in the shape of a rod in the vertical direction perpendicular to the center on the socket base, the plurality of LED or LED chip is arranged in a dot form on both sides of the rod-shaped circuit board Lighting.
The method of claim 1,

The center of the circuit board is further provided with a reflecting plate of the cross-sectional inverted trapezoidal shape is mounted in a vertical direction so that the light emitted upward from the plurality of LEDs or LED chip evenly reflected toward the side of the transparent light emitting tube Tube type LED lighting lamp characterized in that.
The method according to any one of claims 1 to 3,

And a cylindrical vertical toothed portion having a toothed portion formed at an inner side of the upper portion of the socket base to protrude and screwed into engagement with a toothed portion formed at a lower outer circumferential surface of the cylindrical transparent light emitting tube.
The method according to any one of claims 1 to 3,

The tube type LED lamp, characterized in that the transparent light emitting tube is any one of a straight tube, a bent or a sphere.
The method according to any one of claims 1 to 3,

The illumination color conversion fluorescent plate is a tube-type LED lighting lamp, characterized in that the illumination color conversion phosphor, the light diffuser and the pigment is uniformly dispersed in a matrix resin.
The method of claim 7, wherein

And said illumination color conversion phosphor is a yellow phosphor for converting a blue LED into a white LED.
The method of claim 7, wherein

And said illumination color converting phosphor is used for converting a blue LED into a white LED as a red phosphor and a green phosphor.
The method of claim 7, wherein

LED lighting lamp, characterized in that for converting the illumination color conversion phosphor to a white LED of a purple LED or an ultraviolet LED as a red phosphor, a green phosphor and a blue phosphor.
The method of claim 1,

Tube-type LED lighting, characterized in that the transparent light emitting tube is formed by applying a light diffuser or a phosphor.